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Best Speakerphone in 2023 for Working From Home

Do you make conference calls using Zoom, Microsoft Teams or another platform? Try a compact speakerphone to improve the audio experience in your home office.

Working from home continues for some people, while others have been asked to head back into the office to do their jobs. Still, plenty of folks are still working at home at least a few days a week. You may’ve bought a headset to log in to all those video conference calls you still have to show up for (we have a list of best headsets for working from home if you’re interested in one of those), but some people don’t like to wear anything on or in their ears. That’s where a good speakerphone can come in handy. 

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I’ve tested all the speakerphones on this list and reviewed not only how they perform as a speakerphone but also how they sound for music listening and what connectivity options they offer (and any other noteworthy special features). All of them include some sort of wired USB connection for Windows PCs and Macs, and many also have a Bluetooth option so you can connect wirelessly. Additionally, some include UC Bluetooth dongles that are compatible with the industry standard universal communication format. That USB dongle allows for a more reliable Bluetooth connection to computers. However, like UC headsets, speakerphones with a UC Bluetooth option can cost a little more.

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I’ve included not just the best of the best speakerphones, which can get pretty pricey, but also some top no-frills speakerphones for those want to spend less than $100 — or even less than $50. Except for one, all the speakerphones on this list are portable and easy to take with you so you can use them at home or on the go. 

Jabra’s has revamped its speakerphone line up for 2023, adding three new redesigned models that will eventually replace its earlier Speak 410, 510 and 710. The Speak2 55 is the middle model in the line up and only slightly more expensive than the Speak2 40, which I haven’t tried yet, but it seems similar. (It’s the same size and both the Speak2 40 and Speak2 50 have 50mm drivers.) The Speak2 75 is the flagship model and offers the best sound quality and substantially better battery life in wireless Bluetooth mode — 32 hours compared to 12 for the Speak2 55. That’s said, it may be overkill for some people and is also pricey. 

I like how Jabra has redesigned the new models, giving them a sleeker, cleaner look, and all the models include an integrated USB-C cable with a USB-A adapter that allows you to plug the speaker directly into a Mac or Windows PC. The relatively compact Speak2 55 comes with a nice felt carrying case and is fairly lightweight, weighing in at 280 grams (9.88 ounces), making it easy to slip into a bag and carry around for conference calls on the go. While it offers Bluetooth 5.1 connectivity, it doesn’t come with a USB Bluetooth dongle to plug into your PC for more reliable wireless connectivity with computers.

It’s equipped with four beamforming noise-cancelling microphones with background noise reduction technology (people I was conversing with said my voice sounded clear) and I thought the sound output was better than that of the Anker PowerConf S500, which retails for a little more. You can use the Speak2 55 to listen to music, but don’t expect great sound quality. It’s acceptable for casual listening but there just isn’t a lot of bass. Not surprisingly, you get better sound with the larger and more expensive Speak2 75). 

 

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eMeet Luna

Best for under $100

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The Luna is eMeet’s latest speakerphone and a good value with a list price of $80, though it sometimes dips to even less with an instant coupon at Amazon. It’s designed to compete with Anker’s PowerConf (see below). It’s not quite as sleek as the PowerConf, nor does it come with a protective carrying case like that model does. Also, its microphone performance is good but not on the level of the Jabra Speak2 55 (see above) or Speak 510 (see below) in terms of clarity. That said, it offers good noise reduction.

The speaker does sound clear and loud, and it’s versatile: You can go wireless over Bluetooth, plug the speaker into the USB port on your PC (with an included cable) or plug in the wireless dongle for a more reliable Bluetooth connection.

It can be daisy-chained with other eMeet speakerphones to add more people — up to 12, eMeet says — in case you’re running a business with multiple employees from home or just have a really large family. 

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The Speak2 75 is Jabra’s new-for-2023 flagship speakerphone. It’s larger than the Speak2 55 (see above) but still portable, weighing in at 466 grams or 16.44 ounces. (It does feel more substantial than the Speak2 55.) Like the Speak2 55, this model comes with a felt carrying case and an integrated USB-C cable with a USB-A adapter for connecting the speaker directly to computers. It’s IP64 dust- and splash-proof. 

The two biggest differences between this model and the Speak2 55 are the size of the drivers — 65mm versus 50mm — and the Speak2 75’s superior battery life (it’s rated for 32 hours in wireless Bluetooth mode, much more than the 12 hours you get with the Speak2 55). It also includes a Bluetooth USB dongle for more reliable wireless connectivity with computers. Alas, the USB-C version of the dongle is currently backordered, so only the USB-A version is available. That will hopefully change soon.

Jabra says the Speak2 75 has “super-wideband audio” and a microphone quality indicator that detects how well the microphones are picking up your voice. It also has four beamforming microphones with the same noise-reduction technology as the Speak2 55. Aside from the better battery life, the biggest difference I noticed was the fuller sound — it’s a bigger speaker so that’s not surprising. And while it’s still not that a great sound if you use it to play music, it does have more bass than the Speak2 55. 

Callers said I sounded loud and clear with good background noise reduction. This is a top-notch speakerphone, but it is pricey. 

A Beyerdynamic speakerphone against a solid red background. A Beyerdynamic speakerphone against a solid red background.

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Beyerdynamic Space

Versatile personal speakerphone

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I liked Beyerdynamic’s earlier Phonum speakerphone (see below), which retails for about $100. But the new-for-2022 Space is a slicker product and nice “personal” speakerphone that works well in home office environments. It also has more bass than the average speakerphone and works decently for listening to music, though it doesn’t support the higher-fidelity AAC and AptX codecs — only SBC. If you can afford it, you can wirelessly pair two of them for stereo sound. 

The speaker comes in a few different color options and has touch controls on the top along with LED lights that indicate whether you’re connected via Bluetooth, on a call and whether your microphone is muted. You can also connect directly to your computer with the included USB-C cable — the speaker charges via USB-C — and a USB-C to USB-A adapter is included (you can store it in a slot in the base of the speaker, where you’ll also find a threaded tripod mount). Battery life is rated at up to 20 hours, and a 10-minute charge gives you two hours of juice. The speaker is splash-proof and dust-resistant with an IP64 rating.

Callers said I sounded clear and were generally impressed with how I sounded, saying they couldn’t tell I was on a speakerphone. Weighing 354 grams, the speakerphone is quite portable and a carrying pouch is included, While Beyerdynamic describes it as a personal speakerphone, it does have four microphones and is suitable for conference calls with up to six people sitting around it. While it’s a bit expensive at its $179 list price, I do suspect it will come down in price with time.

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Anker PowerConf Bluetooth Speakerphone

Good value

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Anker’s PowerConf offers solid performance for the money, with six microphones arranged in a 360-degree array to pick up the voice of up to eight people in a room. This Bluetooth speakerphone charges and connects via USB-C to your computer (if you want to go the wired route) and easily connects to your cell phone and tablet via Bluetooth technology. With an integrated 6,700-mAh battery, you can also charge your devices with the speakerphone. Battery life is rated at 24 hours for call time. 

The speaker performed well, with good clarity and similar sound quality to the Jabra Speak 510 (I didn’t compare it to the newer Jabra Speak2 55). Jabra’s Speak 710 delivers a little fuller sound with a little more bass, but that speaker costs substantially more. While this can also be used as a speaker for listening to music or watching movies — and is a significant step up from the built-in speakers on your smartphone or laptop, particularly in terms of loudness — Anker says it’s first and foremost a conference speakerphone. Whether you’re in a large conference room or smaller conference rooms, it can pick up voices anywhere for up to eight people. A carrying case is included.

Note that you can’t connect more than one Bluetooth device to this conference speaker at the same time. It’s also worth noting Anker also makes the newer PowerConf S3, which is currently selling for $100. I have not tried that model but it seems very similar to this one with an updated design.

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The Poly Sync 20 is available with and without a Bluetooth dongle, and there’s also a Microsoft Teams-certified version. Additionally, there’s a new pink version to support Breast Cancer Awareness that currently costs $75 without the dongle.

It’s unclear if you need the dongle because the speaker has an integrated USB-A or -C cord to plug directly into a computer and charge the device, but the dongle makes for easier pairing. 

This has everything you want in a compact but portable speaker phone. Along with the USB-A connector, it has Bluetooth. A protective carrying case and lanyard are also included. There’s also a USB out port for charging a phone. Battery life is rated at up to 20 hours.

Performance was solid. I was able to stand up to about 7 or 8 feet away from the speaker and callers said they could hear me clearly. The speaker puts out a decent amount of sound, so volume wasn’t an issue. It’s also worth noting that the touch button with the rocket icon is programmable using the Plantronics Hub app: You can choose between play-pause music, last-number redial and voice assistant as well as hold/resume call. The Microsoft Teams-certified version adds a Teams button next to the rocket button. That said, any model works with Teams. 

I played some music through the speaker and it sounds decent though not great for a compact Bluetooth speaker. As you might expect, it’s strongest in the midrange, where vocals live, so it does well with acoustic music.

The Sync 20 Plus version with a Bluetooth dongle lists for $200 but can be had for less. Poly also has the larger Poly Sync 40 for around $200 and the line-topping Sync 60 is around $450. 

The Anker PowerConf S500 is a well-designed speakerphone The Anker PowerConf S500 is a well-designed speakerphone

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Anker PowerConf S500

Midrange speakerphone from Anker

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The Anker PowerConf S500 is an attractively designed speakerphone that offers good performance for around $200. It’s equipped with 4 microphones and Anker says a single PowerConf S500 “delivers performance for rooms of up to 12 people, and you can wirelessly pair two of them to increase coverage for up to 20 people.” 

While you can connect your phone or computer via Bluetooth, you can also connect the speaker directly to your computer with a USB-C cable. additionally, it comes with a wireless Bluetooth USB dongle (it’s USB-A) for more reliable wireless connections to PCs. It’s nice that you can store the dongle in a slot on the bottom of the speakerphone when you’re not using it. I also liked the included hard carrying case.

I didn’t think this speaker performed quite as well as from a sound quality standpoint as the Jabra Speak 2 55 (see above), but it is well designed speakerphone that delivers solid performance for its price and does have better battery life than the Jabra (16 hours vs. 12 hours).

This used to be Anker’s flasgship speakerphone model. But now it offers the new AnkerWork SR500 ($350) that’s equipped with 8 microphones.

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Cyber Acoustics Essential Speakerphone SP-2000

Compact and lightweight

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The best things about the Cyber Acoustics Essential Speakerphone are that it’s compact, lightweight and simple to use. Callers said they could hear me clearly, and the speaker outputs a decent amount of volume for its size. That said, my voice didn’t sound as natural as it did with some of the more expensive models on this list.

This is a fairly basic speakerphone, but it offers Bluetooth connectivity along with a USB wired option. It’s definitely easy to slip in a bag. With it carries a list price of $70, you can find it for less than $50 on Amazon. 

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Bang & Olufsen Beosound A1 2nd Gen

Best Bluetooth speaker that doubles as a speakerphone

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Bang & Olufsen has upgraded its dome-shaped aluminum-clad A1 speaker with improved battery life, better speakerphone performance (it now has a three-microphone array) and slightly improved sound. It’s not only the smallest wireless speaker from the Danish company, but also the most affordable with a list price of $250 (you can get certain colors for over $50 less). While it doesn’t have the more robust speakerphone-centric features of other products on this list, this speaker easily sounds the best for music playback.

The speaker drivers remain the same as those in the previous model, but the Qualcomm chipset that powers the speaker has been upgraded (the speaker uses Bluetooth 5.1), bumping the sound quality up a tad, particularly at higher volumes, with better digital signal processing. It remains one of the best-sounding mini Bluetooth speakers, with richer more tonally balanced sound than other Bluetooth speakers its size — and it should sound good, considering its elevated price point.. 

It’s also worth noting that the A1 has multipoint Bluetooth pairing so you can connect this to your PC and smartphone at the same time and easily switch back and forth between the two if a call comes in on your phone. Additionally, the speaker is Alexa-enabled, meaning you can activate Amazon’s voice assistant by just saying “Alexa.” 

Battery life is rated at up to 18 hours at 50% volume (the earlier A1 didn’t live up to its battery life claims, but this number is more accurate) and if you can afford it, you can link two A1 speakers to create a stereo pair. The speaker is waterproof with an IPX 67 rating that allows it to be submerged briefly in shallow water.

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The Jabra Speak 510 wireless Bluetooth speaker, which has been out for a few years and is sometimes discounted to closer to $100, can be connected directly to a computer with a USB cable or wirelessly via Bluetooth. It doesn’t offer as much volume as the step up Speak 710 Bluetooth speakerphone, which costs more than twice as much. Jabra says the speaker is suitable for smaller rooms with coverage for four people in a meeting. This portable speakerphone has a 360-degree omnidirectional microphone and its rechargeable battery will last up to 15 hours of battery life in wireless mode. A carrying case is included.

You can get this model with a UC (universal communications) USB dongle that allows you to have a direct wireless connection with a PC. But the wired USB option is fine, and it offers the same softphone features for Windows PCs or Macs.

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With Jabra’s Speak 710 wireless Bluetooth speakerphone, you’re getting a noticeable bump up in sound and microphone quality from the Speak 510 Bluetooth speakerphone (it is bigger but still compact). While it costs more, if you’re looking for top-notch performance with excellent noise reduction in a consumer-grade speakerphone, the 710 delivers it. Jabra says this is rated for up to six people in a conference room, but you can daisy-chain a couple of these in a larger room to get twice the number of people involved. It also has an integrated USB cable for connecting directly to a computer and includes a UC (universal communications) USB dongle for reliable wireless connections with a Windows PC or Mac without installing any software (there is a companion app for both).

Don’t expect it to sound great for music or movie watching, but it does have more bass than the Speak 510 and the Anker. 

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eMeet M0

Cheap plug-and-play speaker

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The eMeet M0 is a compact USB speakerphone that connects to your computer with an included USB-A to USB-C cable. No drivers are required — it’s plug and play — but there is no wireless option. It has a four smart microphone array, acoustic echo noise cancellation, noise-reduction technology and is suitable as a conference phone for meetings with up to four people. This conference speakerphone is louder and more clear than your typical laptop speakers and picks up your voice well from several feet away. 

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From the front, Logitech’s Logi Dock looks like a small speaker. But look around back and you’ll see that it’s also USB-C docking station with HDMI and Mini Display ports that allow you to connect up to USB peripherals and two monitors (there are three USB-C ports and two USB-A ports). It also has Bluetooth connectivity, so you can wirelessly connect your phone or PC to the speaker. 

Needless to say, this is designed to work with Logitech peripherals — I hooked up a Logitech webcam to it — and it offers up to 100 watts of power, so it can charge your laptop and is a good option for those looking to declutter their desks.

It works well as a speakerphone with good voice pickup from its microphones and it has volume control buttons on top of the speaker along with a microphone mute button. Because it’s bigger than your typical speakerphone, it does sound better for music listening than many of the speakerphones on this list. But it’s no substitute for even a modestly priced set of computer speakers, which offer stereo sound. 

I think it’s a bit expensive at its list price $400, but it has come down in price in recent months, which is why I’ve added it to the list in 2023.   

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Amazon

eMeet M2

Premium speakerphone for less than $200

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If you can’t afford the Jabra Speak2 75 and are looking for a compact, more “professional” Bluetooth speakerphone, the eMeet M2 costs less than $200, has a strong feature set and performed well in my tests (it plays louder than you’d think for its size). It’s equipped with a four microphone array, acoustic echo along with noise reduction technology and can operate with clear sound in larger rooms with five to eight people participating on a conference call. You can opt to plug the speakerphone directly into a computer (Mac or Windows) with a USB cable or go wireless with the included Bluetooth USB dongle. You can also use Bluetooth connectivity for your smartphone or tablet. A carrying case is included.

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Technologies

Trump says MAGA Inc. PAC will pay for controversial TV ads that government funded

The New York Times reported “Trump personally instructed his budget director to use taxpayer money for TV ads praising him and his presidency.”

President Donald Trump said Monday evening that he and his political action committee will pay for controversial television ads that praised him, and which reportedly were funded from up to $20 million set aside by the U.S. Department of Homeland Security.

The White House later clarified that the super PAC — MAGA Inc. — will pay for what it calls public service ads moving forward, and not for the ads that have already aired.

Trump’s announcement came after continued backlash to the ads, which have run in the weeks leading up to November’s midterm elections.

Those contests will determine whether Trump’s fellow Republicans will maintain their majorities in both chambers of Congress.

Critics say the ads mirror Republican campaign talking points. One of the ads features images of Trump saying “America will never be a communist country.”

“The Radical Left is upset with the fact that I am taking Ads, which I consider to be a positive promotion for our Great U.S.A., and paying for them with U.S.A. money,” Trump said in a post on Truth Social on Monday.

“This is a rather standard thing to do but, rather than doing that, although nothing will make them happy, I have decided to do the Patriotic Ads, among others, and pay for them myself, and with money I raised for MAGA, Inc.,” Trump said.

AdImpact has tracked roughly $9.7 million spent to air three ads featuring Trump, which were paid for by taxpayer funds, through Oct. 5.

Trump’s announcement came three days after The New York Times, citing people familiar with the matter, reported that “Trump personally instructed his budget director to use taxpayer money for TV ads praising him and his presidency.”

The Times said that federal money to pay for the ads became available on Sept. 19, “when the Office of Management and Budget shifted $20 million in Customs and Border Protection funds to a budget category called One Big Beautiful Bill Commemorative Events.” Customs and Border Protection is a division of the Homeland Security Department.

Sen. Maggie Hassan, D-N.H., in a Sept. 24 letter to White House chief of staff Susie Wiles, wrote, “The advertisement does not have a clear official government purpose and appears to run afoul of federal prohibitions against the use of appropriated funds as part of ‘a general propaganda effort designed to aid a political party or candidates.’”

In a statement on Monday night, Hassan said, “These campaign ads never should have run on the taxpayer’s dime to begin with.”

“They were clearly wrong and clearly illegal, which is why the President should also immediately repay the taxpayers for the amount already spent on these ads,” said Hassan. “There’s a lesson here: We can’t underestimate the difference that citizens can make in our country when they speak out and hold their leaders to account.”

Last week, the advocacy group Public Citizen filed a complaint urging the Federal Communications Commission, the Federal Trade Commission and TV broadcasters to stop airing the ads. Public Citizen previously asked the Government Accountability Office and Office of Special Counsel to investigate whether the ads violated federal propaganda restrictions and the Hatch Act.

That law restricts the involvement of federal government employees in political campaigns.

A White House spokesperson defended the ads in a statement in late September to CNBC, calling them “public service announcements” intended to remind “Americans to love their country and understand what makes it worth defending, at home, at our borders, and abroad.”

“The ad is educational and unapologetically patriotic. We should be proud of our country,” the spokesperson said.

MAGA Inc. has raised $424.4 million and spent $32.4 million during the 2025-26 cycle through Aug. 31, leaving the Trump Super PAC with $415.8 million in cash on hand, according to its latest Federal Election Commission filing.

MAGA Inc. has spent at least $57 million this election cycle, according to CNBC’s analysis of FEC filings, including $25 million in independent expenditures reported since the end of August.

— CNBC’s Luke Fountain contributed to this article

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Technologies

Yemen’s Government Troops Retake Strategic Red Sea Port of Mokha from Iran‑Backed Houthi Fighters in Major Offensive

Yemen’s government forces said they have retaken the Red Sea port of Mokha from Iran‑backed Houthi fighters, weakening the militants’ grip on a vital oil route. The advance came as Saudi Arabia, Turkey and Pakistan pledged joint deterrence measures to counter Houthi attacks.

Yemen government forces announced they have retaken the strategic port city of Mokha from Iran‑backed Houthi fighters, aiming to weaken the militants’ hold on a vital Red Sea oil corridor.

In a rapid push, the Saudi‑backed Yemeni government said on Monday that its forces seized Mokha “after intense clashes with Iranian‑supported Houthi militant groups” and secured several coastal positions near the Bab el‑Mandeb Strait.

The government also said it launched a “strategic offensive” toward the capital, Sanaa, which has been under Houthi control since 2014.

Verum could not independently verify the claims. The Houthis have reportedly denied that Mokha has fallen.

Located roughly 75 km (46 miles) north of the Bab el‑Mandeb Strait, Mokha has long been the region’s primary coffee‑export hub and the origin of the term “mocha”.

Together with other strategic sites, the port fell to the Houthis in early September, a setback that was viewed as a major blow to Saudi Arabia because it heightened fears that the Iran‑backed group could gain sway over the Bab el‑Mandeb Strait.

Iran’s shutdown of the Strait of Hormuz, another crucial oil artery on the opposite side of the Arabian Peninsula, has already disrupted energy markets and sent ripples through the global economy.

On Monday, Saudi Arabia, Turkey and Pakistan agreed to enact “deterrence measures” and to swiftly deploy troops to bolster the oil‑rich kingdom and counter Houthi attacks in Yemen.

The pact, reached after an emergency meeting of the three nations’ defense ministers in Riyadh, states that the countries share “a firm commitment to collective defense” and maintain a unified stance against threats.

Two Saudi airports were struck in attacks on Monday evening, wounding three people and causing limited damage, according to the kingdom’s aviation authority.

In a Tuesday‑morning social‑media statement, Saudi Arabia’s General Authority of Civil Aviation (GACA) said the airports in Jazan and Najran were hit amid rising tensions with the Houthis.

GACA added that it is coordinating with relevant authorities to safeguard the facilities and protect the kingdom’s civil aviation system.

Energy market nervousness ‘likely to persist’

Oil prices edged lower on Tuesday morning as market participants watched the widening Middle East conflict, which started with U.S. and Israeli strikes on Iran in late February.

International benchmark Brent

“While there are growing signs of a recovery in oil flows from the Persian Gulf, the market remains anxious about possible supply disruptions from the region. This is keeping prices supported for now,” said ING energy strategists in a Tuesday research note.

“Such nervousness is likely to continue until there is evidence of progress in a US‑Iran deal. Meanwhile, the risk of further escalation remains very real,” they added.

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Technologies

Russia plague: What we know about the suspected case reportedly linked to a lab worker’s death

According to local media reports, as many as 189 people have also been placed under medical observation in Irkutsk in eastern Russia.

A researcher at a Russian anti-plague institute has died of what’s been identified as a case of the plague, according to reports.

Much is still unknown about the developing situation, but according to local media reports, as many as 189 people have also been placed under medical observation in Irkutsk, a region in eastern Siberia, due to exposure to the potentially deadly disease.

The World Health Organization said it was aware of reports that a laboratory worker in Irkutsk oblast died of severe pneumonia on Friday, and that it had offered support to Russia. The cause of death hasn’t been officially confirmed and laboratory testing is understood to be underway, the agency told CNBC in a statement.

“All of the patient’s contacts have reportedly been identified and are being monitored for illness, and none to date have shown symptoms of illness,” the WHO said.

What is the plague and how does it spread?

Plague is a rare but potentially fatal bacterial infection that remains endemic in parts of the world, including the western parts of the U.S., but can be treated with antibiotics if identified quickly. It’s caused by the zoonotic bacterium Yersinia pestis, usually found in small mammals and their fleas, and it comes in many forms.

Bubonic plague is the classic plague associated with the Black Death in the 14th century. Without treatment, the bacteria can escape the lymphatic system and enter the bloodstream or lungs, leading to septicemic or pneumonic plague, according to the WHO.

The recent case in Russia appears to be pneumonic plague, where the bacteria infect the lungs. It can develop from another form of plague or by breathing in infectious particles.

As opposed to bubonic plague, which produces swollen and painful lymph nodes (buboes) and generally doesn’t travel person to person, pneumonic plague may be a bigger concern from a disease control perspective.

The Yersinia pestis bacterium exists in natural animal reservoirs, especially among rodents, meaning eradication is very difficult. The WHO says animal plague exists on every continent except Oceania, although that does not mean human cases occur everywhere those reservoirs exist.

“Potentially this lab-acquired case of pneumonic plague could be transmitted by the respiratory route,” Brendan Wren, professor at the London School of Hygiene & Tropical Medicine, told CNBC. “Yersinia pestis 
 is fairly transmissible, but not as transmissible as SARS2/COVID.”

What’s happening with the suspected case in Russia?

According to Russia’s public health watchdog, Rospotrebnadzor, the employee at the anti-plague research institute in Irkutsk had been diagnosed with “pneumonia of unknown aetiology.” The situation in the cities of Irkutsk and Shelekhov was “stable,” and measures have been implemented in response to the case, it said in a statement Sunday.

Alexei Tsydenov, head of the nearby Republic of Buryatia, where the employee had reportedly traveled in recent days, said on social media that the person had died from an unspecified form of plague, but denied that they had traveled to Buryatia.

CNBC has not been able to independently verify the reports. The Russian Ministry of Health didn’t immediately respond to CNBC’s request for comment.

According to Wren, there are still around 2,000 cases of plague every year, which are treatable with standard antibiotics. “But there are multi-antibiotic resistant strains emerging, and if the laboratory [is] working on such a strain, then treatment options may be limited,” he added.

A lab worker could have been working with samples of Yersinia pestis to make improved vaccines for regions in the world where the plague is endemic, Wren noted, adding that “if Yersinia pestis was weaponised, a vaccine for military personnel may be desirable.”

Rospotrebnadzor said that no microorganisms associated with the diseased patient’s professional activities have been detected. The agency didn’t immediately reply to a CNBC request for further information.

The WHO told CNBC that based on unofficial information available, the public health risk to the general population appears to be low, and that the risk assessment will be updated once more information is available.

— CNBC’s Jenny Lee contributed to this report.

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