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Expressing concern over the ban imposed on TikTok by the government of India, Facebook CEO Mark Zuckerberg has reportedly called the development in the south Asian country “worrisome”.

TikTok was amongst the 59 Chinese apps that were banned in India but why it hogs the maximum limelight because TikTok had the second-largest user base in India with over 200 million users.

As per The Verge writer Casey Newton, Zuckerberg was worried about TikTok’s India ban. Although it soon cashed into the opportunity and released a TikTok clone “Reels”, the government’s reason behind banning the app in India wasn’t received well by Mark Zuckerberg. 

He had said that if India can ban a platform with over 200 million users in India without citing concrete reasons, it can also ban Facebook if something goes amiss on the security and privacy front.

Why Mark finds it particularly worrisome because Facebook is already involved in a lot tussle with the governments across the world involving national security concerns. 

“Facebook already faces fights around the world from governments on both the left and the right related to issues that fit under the broad umbrella of national security: election interference, influence campaigns, hate speech, and even just plain-old democratic speech. Zuckerberg knows that the leap from banning TikTok on national security grounds to banning Facebook on national security grounds is more of a short hop,” the report by Casey read.

Facebook till now has not faced any kind of issue in India but considering the debacle with the other governments, it is not entirely wrong to worry about its future in India if any national security issue arises. Back in 2016, Facebook’s Free Basics service, which means a free but restricted internet service, was banned in India by the telecom regulators. 

The TRAI had said that the Free Basic services were banned in India because it violated the principles of net neutrality. With Free Basics services, Facebook had planned to bring more unconnected users online. But since 2016, there has been no major tussle between the Indian government and Zuckerberg due to national security issues.

The coronavirus can stay aloft for hours in tiny droplets in stagnant air, infecting people as they inhale, mounting scientific evidence suggests.

This risk is highest in crowded indoor spaces with poor ventilation, and may help explain superspreading events reported in meatpacking plants, churches and restaurants.

It’s unclear how often the virus is spread via these tiny droplets, or aerosols, compared with larger droplets that are expelled when a sick person coughs or sneezes, or transmitted through contact with contaminated surfaces, said Linsey Marr, an aerosol expert at Virginia Tech.

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Aerosols are released even when a person without symptoms exhales, talks or sings, according to Marr and more than 200 other experts, who have outlined the evidence in an open letter to the World Health Organization.

What is clear, they said, is that people should consider minimizing time indoors with people outside their families. Schools, nursing homes and businesses should consider adding powerful new air filters and ultraviolet lights that can kill airborne viruses.

What does it mean for a virus to be airborne?

For a virus to be airborne means that it can be carried through the air in a viable form. For most pathogens, this is a yes-no scenario. HIV, too delicate to survive outside the body, is not airborne. Measles is airborne, and dangerously so: It can survive in the air for up to two hours.

For the coronavirus, the definition has been more complicated. Experts agree that the virus does not travel long distances or remain viable outdoors. But evidence suggests it can traverse the length of a room and, in one set of experimental conditions, remain viable for perhaps three hours.

How are aerosols different from droplets?

Aerosols are droplets, droplets are aerosols — they do not differ except in size. Scientists sometimes refer to droplets fewer than 5 microns in diameter as aerosols. (By comparison, a red blood cell is about 5 microns in diameter; a human hair is about 50 microns wide.)

From the start of the pandemic, the WHO and other public health organizations have focused on the virus’s ability to spread through large droplets that are expelled when a symptomatic person coughs or sneezes.

These droplets are heavy, relatively speaking, and fall quickly to the floor or onto a surface that others might touch. This is why public health agencies have recommended maintaining a distance of at least 6 feet from others, and frequent hand washing.

But some experts have said for months that infected people also are releasing aerosols when they cough and sneeze. More important, they expel aerosols even when they breathe, talk or sing, especially with some exertion.

Scientists know now that people can spread the virus even in the absence of symptoms — without coughing or sneezing — and aerosols might explain that phenomenon.

Because aerosols are smaller, they contain much less virus than droplets do. But because they are lighter, they can linger in the air for hours, especially in the absence of fresh air. In a crowded indoor space, a single infected person can release enough aerosolized virus over time to infect many people, perhaps seeding a superspreader event.

For droplets to be responsible for that kind of spread, a single person would have to be within a few feet of all the other people, or to have contaminated an object that everyone else touched. All that seems unlikely to many experts: “I have to do too many mental gymnastics to explain those other routes of transmission compared to aerosol transmission, which is much simpler,” Marr said.

Can I stop worrying about physical distancing and washing my hands?

Physical distancing is still very important. The closer you are to an infected person, the more aerosols and droplets you may be exposed to. Washing your hands often is still a good idea.

What’s new is that those two things may not be enough. “We should be placing as much emphasis on masks and ventilation as we do with hand washing,” Marr said. “As far as we can tell, this is equally important, if not more important.”

Should I begin wearing a hospital-grade mask indoors? And how long is too long to stay indoors?

Health care workers may all need to wear N95 masks, which filter out most aerosols. At the moment, they are advised to do so only when engaged in certain medical procedures that are thought to produce aerosols.

For the rest of us, cloth face masks will still greatly reduce risk, as long as most people wear them. At home, when you’re with your own family or with roommates you know to be careful, masks are still not necessary. But it is a good idea to wear them in other indoor spaces, experts said.

As for how long is safe, that is frustratingly tough to answer. A lot depends on whether the room is too crowded to allow for a safe distance from others and whether there is fresh air circulating through the room.

What does airborne transmission mean for reopening schools and colleges?

This is a matter of intense debate. Many schools are poorly ventilated and are too poorly funded to invest in new filtration systems. “There is a huge vulnerability to infection transmission via aerosols in schools,” said Don Milton, an aerosol expert at the University of Maryland.

Most children younger than 12 seem to have only mild symptoms, if any, so elementary schools may get by. “So far, we don’t have evidence that elementary schools will be a problem, but the upper grades, I think, would be more likely to be a problem,” Milton said.

College dorms and classrooms are also cause for concern.

Milton said the government should think of long-term solutions for these problems. Having public schools closed “clogs up the whole economy, and it’s a major vulnerability,” he said.

“Until we understand how this is part of our national defense, and fund it appropriately, we’re going to remain extremely vulnerable to these kinds of biological threats.”

What are some things I can do to minimize the risks?

Do as much as you can outdoors. Despite the many photos of people at beaches, even a somewhat crowded beach, especially on a breezy day, is likely to be safer than a pub or an indoor restaurant with recycled air.

But even outdoors, wear a mask if you are likely to be close to others for an extended period.

When indoors, one simple thing people can do is to “open their windows and doors whenever possible,” Marr said. You can also upgrade the filters in your home air-conditioning systems, or adjust the settings to use more outdoor air rather than recirculated air.

Public buildings and businesses may want to invest in air purifiers and ultraviolet lights that can kill the virus. Despite their reputation, elevators may not be a big risk, Milton said, compared with public bathrooms or offices with stagnant air where you may spend a long time.

If none of those things are possible, try to minimize the time you spend in an indoor space, especially without a mask. The longer you spend inside, the greater the dose of virus you might inhale.

Dubai, Apr 2: A senior Saudi official urged more than 1 million Muslims intending to perform the hajj to delay making plans this year in comments suggesting the pilgrimage could be cancelled due to the new coronavirus pandemic.

In February, the kingdom took the extraordinary decision to close off the holy cities of Mecca and Medina to foreigners over the virus, a step which wasn’t taken even during the 1918 flu epidemic that killed tens of millions worldwide.

Restrictions have tightened in the kingdom as it grapples with over 1,500 confirmed cases of the new virus. The kingdom has reported 10 deaths so far. The Middle East has more than 71,000 confirmed cases of the virus, most of those in Iran, and over 3,300 deaths.

“The kingdom of Saudi Arabia is prepared to secure the safety of all Muslims and nationals,” Saudi Hajj and Umrah Minister Muhammad Saleh bin Taher Banten told state television. “That’s why we have requested from all Muslims around the world to hold onto signing any agreements (with tour operators) until we have a clear vision.”

Saudi Arabia has barred people from entering or exiting three major cities, including Mecca and Medina, and imposed a nighttime curfew across the country. Like other countries around the world and in the Middle East, Saudi Arabia has suspended all inbound and outbound commercial flights.

Each year, up to 2 million Muslims perform the hajj, a physically demanding and often costly pilgrimage that draws the faithful from around the world. The hajj, required of all able-bodied Muslims to perform once in their lifetime, is seen as a chance to wipe clean past sins and bring about greater humility and unity among Muslims.

Standing in Mecca in front of the cube-shaped Kaaba that Muslims pray toward five times daily, Banten also said the kingdom was already providing care for 1,200 pilgrims stuck in the holy city due to global travel restrictions. A number of them are being quarantined in hotels in Mecca, he said.