Aerosols spread tuberculosis like Covid-19: Study


Johannesburg, Oct 20 | Much like Covid-19, tuberculosis (TB) is also spread primarily by inhalation of virus-laden aerosols more than coughing, as thought so far, according to study by South African researchers.

Researchers from the University of Cape Town presented the study at the 52nd Union World Conference on Lung Health, being held online between October 19-22.

The team showed that about 90 per cent of TB bacteria released from an infected person may be carried in tiny droplets, called aerosols, that are expelled when a person exhales deeply, the New York Times reported.

The study echoes the recent findings that SARS-CoV-2, the virus causing Covid-19, along with others such as MERS-CoV, influenza, measles, and the rhinoviruses that cause the common cold all spread via aerosols that can build up in indoor air and linger for hours.

“Our model would suggest that, actually, aerosol generation and TB generation can happen independent of symptoms,” Ryan Dinkele, a graduate student at the University of Cape Town who presented the results, was quoted as saying by the NYT.

However, the new study does not change that the TB transmission occurred via droplets — a single cough can expel more bacteria than a single breath.

“But if an infected person breathes 22,000 times per day while coughing up to 500 times, then coughing accounts for as little as 7 per cent of the total bacteria emitted by an infected patient,” Dinkele said.

The finding helps explain why tightly packed indoor spaces, like prisons, often are breeding grounds for TB, as they are for Covid.

Further, the study also suggested that measures used to curb Covid transmission like masks, open windows or doors, are important in limiting TB, the report said.

TB is caused by a bacterium called Mycobacterium tuberculosis, which usually attacks the lungs.

It is the world’s deadliest infectious disease after Covid-19, claiming more than 1.5 million lives in 2020 — the first increase in a decade, according to the World Health Organization’s 2021 Global TB report published last week.

Covid-19 has pushed back progress made on TB as the pandemic disrupted access to healthcare and supply chains around the globe. In 2020, 5.8 million people were diagnosed with TB. But the WHO estimates that about 10 million people were infected, the report said.

Source: IANS

Next Story

Elon Musk asks hard-hitting AI engineers for job

Elon Musk asks hard-hitting AI engineers for job

Tesla founder and CEO Elon Musk on Monday tweeted that he is hiring Artificial Intelligence (AI) engineers who are passionate about solving day-to-day problems through AI

San Francisco, Dec 6 | Musk hiring engineers to solve problems that affects people’s lives. Tesla founder and CEO Elon Musk on Monday tweeted that he is hiring Artificial Intelligence (AI) engineers who are passionate about solving day-to-day problems through AI.

“As always, Tesla is looking for hardcore AI engineers who care about solving problems that directly affect people’s lives in a major way,” Musk tweeted along with a link to apply for the job.

Interested candidates can apply by filling in fields like name, email, exceptional work done in software, hardware or AI, dropping their resume in the PDF format and hitting the Apply option.

As per the website, Tesla’s AI and Autopilot unit develops and deploys autonomy at scale in vehicles, robots and more.

“We believe that an approach based on advanced for vision and planning, supported by efficient use of inference hardware, is the only way to achieve a general solution for full self-driving and beyond,” the website read.

In a 2014 interview, Musk said he looked for “evidence of exceptional ability” in a potential employee, rather than a degree from a prestigious university.

Acer launches new gaming laptop with 4K Mini LED panel

“There is no need even to have a college degree at all, or even high school,” Musk said during an interview with the German automotive publication Auto Bild about his hiring preferences more broadly.

“If somebody graduated from a great university, that may be an indication that they will be capable of great things, but it’s not necessarily the case. If you look at, say, people like Bill Gates or Larry Ellison, Steve Jobs, these guys didna¿t graduate from college, but if you had a chance to hire them, of course that would be a good idea.”

Source: IANS


Please enter your comment!
Please enter your name here