Lack of evidence: CBI court acquits Yeddyurappa, two sons in bribery case

New Delhi, Apr 29: WhatsApp on Tuesday said it will now allow up to eight people to connect on a group video call as an increasing number of people turn to digital platforms to connect with friends and family amid the COVID-19 pandemic.

The Facebook-owned company said over the last month, people on average are spending over 15 billion minutes talking each day on WhatsApp calls, well above a typical day before the pandemic.

"...we see that people all over the world are turning to voice and video calling on WhatsApp more than ever before. Group calling has been particularly useful and our users have asked to connect with more people at once," WhatsApp said in a blogpost.

Starting Tuesday, the company is doubling the number of participants one can have on a WhatsApp video or voice call from 4 to 8 people at a time, it added.

WhatsApp emphasised that like written messages, all calls on its platform are protected with end-to-end encryption.

"We have built group calling in a way that makes it available for as many users as possible, including people on lower-end devices and slow network conditions," it added.

Also Read: Coronavirus India update: State-wise total number of confirmed cases, deaths

WhatsApp said that to access the new, higher participant limit on WhatsApp calls, all participants in a call need to update to the latest version of WhatsApp available on iPhone or Android.

Video calling tools like Google Meet, Microsoft Teams, Zoom and others have also seen a significant jump in userbase and traffic as people connect while maintaining social distancing amid the coronavirus outbreak.

Last week, Facebook had introduced Messenger Rooms that will soon hold up to 50 people with no time limit.

It had added that the company will also add ways to create rooms from Instagram Direct, WhatsApp and Portal.

Noting that between WhatsApp and Messenger, more than 700 million accounts participate in calls every day, Facebook had said, adding that video calling on Messenger and WhatsApp more than doubled in many countries.

Also, views of Facebook Live and Instagram Live videos have also increased significantly in March, it said.

The current physical distancing guidelines provided by the World Health Organisation (WHO) and by the US Centers for Disease Control and Prevention (CDC) may not be adequate to curb the coronavirus spread, according to a research which says the gas cloud from a cough or sneeze may help virus particles travel up to 8 metres. The research, published in the Journal of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.

Study author, MIT associate professor Lydia Bourouiba, warned that droplets of all sizes can travel 23 to 27 feet, or 7-8 metres, carrying the pathogen.

According to Bourouiba, the current guidelines are based on "arbitrary" assumptions of droplet size, "overly simplified", and "may limit the effectiveness of the proposed interventions" against the deadly pandemic.

 She explained that the old guidelines assume droplets to be one of two categories, small or large, taking short-range semi-ballistic trajectories when a person exhales, coughs, or sneezes.

However based on more recent discoveries, the MIT scientist said, sneezes and coughs are made of a puff cloud that carries ambient air, transporting within it clusters of droplets of a wide range of sizes.

Bourouiba warned that this puff cloud, with ambient air entrapped in it, can offer the droplets moisture and warmth that can prevent it from evaporation in the outer environment.

"The locally moist and warm atmosphere within the turbulent gas cloud allows the contained droplets to evade evaporation for much longer than occurs with isolated droplets," she said.

"Under these conditions, the lifetime of a droplet could be considerably extended by a factor of up to 1000, from a fraction of a second to minutes," the researcher explained in the study.

The MIT scientist, who has researched the dynamics of coughs and sneezes for years, added that these droplets settle along the trajectory of a cough or sneeze contaminating surfaces, with their residues staying suspended in the air for hours.

"Even when maximum containment policies were enforced, the rapid international spread of COVID-19 suggests that using arbitrary droplet size cutoffs may not accurately reflect what actually occurs with respiratory emissions, possibly contributing to the ineffectiveness of some procedures used to limit the spread of respiratory disease," Bourouiba wrote in the study

Bengaluru, Mar 3: Karnataka Health Minister B Sriramulu has said that a medical team is monitoring the health condition of all those people who had stayed with the coronavirus-hit techie who is admitted to a hospital in Hyderabad.

The first confirmed case of the novel coronavirus (COVID-19) in Telangana was reported from Hyderabad on Monday where a man from Bengaluru, who recently returned from Dubai, tested positive for the virus.

"It has come to our knowledge that the coronavirus-hit person in Hyderabad had gone from Bengaluru. Therefore, all the members in the house where he had stayed here have been identified and are under watch," Mr Sriramulu tweeted on late Monday night.

The minister said he has convened a meeting with the additional chief secretary, commissioner and other senior officials of the health department today.

"Our government has initiated all the measures to prevent the spread of this virus," the minister said.

It is learnt that the 24-year-old techie had not contracted it when he was in Bengaluru but all precautionary measures have been taken.

The software engineer, who works in Bengaluru, had worked with people from Hong Kong in Dubai last month where he is suspected to have contracted the virus, Telangana health minister E Rajender told reporters in Hyderabad.

The man reached Bengaluru on February 19/20 and later went to Hyderabad in a bus.

He took treatment for fever after coming to Hyderabad and was admitted to a private super speciality hospital in the city. As it did not subside, he came to the state-run Gandhi hospital on Sunday evening, Mr Rajender said.