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New Delhi, Jul 21: The Centre has written to all states and union territories warning against the use of N-95 masks with valved respirator by people, saying these don't prevent the virus from spreading out and are "detrimental" to the measures adopted for its containment.

The Director-General of Health Services in the Ministry of Health, in a letter to the Principal Secretaries of health and medical education of states, said it has been observed that there is "inappropriate use" of N-95 masks, particularly those with valved respirator, by the public other than designated health workers.

The DGHS referred to the advisory on the use of homemade protective cover for face and mouth available on the website of the Ministry of Health.

"It is to bring to your knowledge that the use of valved respirator N-95 masks is detrimental to the measures adopted for preventing the spread of coronavirus as it does not prevent the virus from escaping out of the mask. In view of the above, I request you to instruct all concerned to follow the use of face/mouth cover and prevent inappropriate use of N-95 masks," DGHS Rajiv Garg said in the letter.

The government had in April issued an advisory on the use of homemade protective cover for face and mouth, asking people to wear it, particularly when they step out of their residences.

The advisory stressed such face covers must be washed and cleaned each day, as instructed and states that any used cotton cloth can be used to make this face cover. 

The colour of the fabric does not matter but one must ensure that the fabric is washed well in boiling water for five minutes and dried well before making the face cover. Adding salt to this water is recommended, it said.

It also listed the procedures of making such homemade masks, asking to ensure it fits the face well and there are no gaps on the sides.

It urges people to wash hands thoroughly before wearing the face cover,  switching to another fresh one as the face cover becomes damp or humid, and never reusing it after single use without cleaning it. 

"Never share the face cover with anyone. Every member in a family should have separate face cover," the advisory stated.

New Delhi, April 3: The Government on Thursday launched a mobile app developed in public-private partnership as part of efforts to contain the spread of coronavirus.

"The app, called 'AarogyaSetu' will enable people to assess themselves the risk for their catching the coronavirus infection," an official release said.

It said that the app will calculate this based on their interaction with others, using cutting edge Bluetooth technology, algorithms and artificial intelligence.

"Once installed in a smartphone through an easy and user-friendly process, the app detects other devices with AarogyaSetu installed that come in the proximity of that phone. The app can then calculate the risk of infection based on sophisticated parameters," the release said.

It said that the app will help the government take necessary timely steps for assessing risk of spread of COVID-19 infection and ensuring isolation where required.

"The app's design ensures privacy. The personal data collected by the app is encrypted using state-of-the-art technology and stays secure on the phone till it is needed for facilitating medical intervention," the release said.

It said the app is available in 11 languages and has highly scalable architecture.

"This app is a unique example of the nation's young talent coming together and pooling resources and efforts to respond to a global crisis. It is at once a bridge between public and private sectors, digital technology and health services delivery," the release said.

Jan 31: Twenty-three children aged between six months and 15 years, who had been taken hostage by a murder accused after inviting them to his daughter's birthday party, were rescued late on Thursday night after police killed their captor in a village here.

The hostage drama began at Kasaria village in the afternoon and continued for about eight hours.

"The accused was killed and there were about 23 children who were rescued safely," Additional Chief Secretary (Home) Awanish Awasthi told reporters at a hurriedly called press conference at 1.20 am.

"The accused had invited the children for the birthday party of his daughter and held them hostage. It started about 5.45 pm on January 30 and continued for about eight hours," Director General of Police (DGP) O P Singh said, adding that in the entire operation they had tried to "engage" the accused and were successful.

He said the accused, identified as Subhash Batham, had initially released a six-month-old girl by handing her over to his neighbour from a balcony.

Eyewitnesses said a restive crowd gathered outside the house where the children were kept with some women wailing and praying for their safe release.

The crowd broke open the door of the house to rescue the children, they said.

As the accused opened fire, the police retaliated killing him on the spot.

In the exchange of fire, the captor's wife was injured, but none of the children suffered any injury.

A man and two policemen also suffered bullet injuries.

The motive of the accused was not known immediately.

Chief Minister Yogi Adityanath monitored the situation in Farrukhabad, which is nearly 200 km from state capital Lucknow.

"The CM as soon as he got to know about the incident called a meeting of the crisis management group and personally monitored the situation and ensured children are rescued safely," Awasthi said.

Earlier, a team of NSG (National Security Guard) commandos had taken a special aircraft to reach Farukhabad, a senior security official in Delhi said.

Police said Batham, a murder accused, seemed to be mentally unstable.

Inspector-General of Police, Kanpur Range, Mohit Agarwal, said, "The man called the children for a birthday party and held them hostage in the basement of the house. He fired six shots from inside the building."

Batham initially wanted to talk to the local MLA, but refused to speak to the leader when he arrived, Agarwal said.