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New Delhi, Apr 24: The trajectory of COVID-19 cases could have plateaued and might even fall for some weeks after the lockdown is lifted but India is likely to see a second wave in late July or August with a surge in the number of cases during the monsoon, say scientists.

The timing of the peak will depend on how India is able to control physical distancing and on the level of infection spreads after restrictions are relaxed, they said.

It looks apparent that the trajectory of daily new cases has reached a plateau and eventually it will take a downward fall, maybe for some weeks or even months, Samit Bhattacharya, associate professor at the Department of Mathematics, Shiv Nadar University, said.

Still, we may get a surge of new cases of the same coronavirus and this will be considered a second wave, Bhattacharya explained.

The second epidemic may come back in late July or August in the monsoon, although the peak timing will depend on how we control social distancing during that time, he said.

Rajesh Sundaresan, professor at Bengaluru's Indian Institute of Science (IISc), agreed.

“Once we return to normal activity levels, there is a chance that infection may begin to rise again. China is seeing this to some extent post easing of some restrictions on travel,” Sundaresan, corresponding author of a working paper by researchers at IISc and the Tata Institute of Fundamental Research (TIFR) in Mumbai, said.

On March 25, when the number of coronavirus cases was 618 with 13 deaths, the government announced a nationwide lockdown that was later extended to May 3.

On Friday, the death toll due to COVID-19 rose to 718 and the number of cases to 23,077, according to the Union Health Ministry.

In good news, officials said this week that the doubling rate of cases has slowed down in the period, going from 3.4 days before lockdown to 7.5 days, with 18 states doing better than the national average. The recovery rate has also almost doubled in the last 10 days.

"Looking at the new cases in the past few days, it seems the growth of new daily infection is much slower than earlier. This apparently indicates that we might have reached at the plateau of the growth curve, Bhattacharya said.

He noted that recent studies in China and Europe observed that the infection might relapse in those people who have already recovered from earlier phases.

So, there is no evidence that the earlier infection may help acquire immunity against the second infection. And in that way, the entire population may be vulnerable to the second wave to some extent, said the scientist.

In their study unveiled this week, IISc and TIFR researchers analysed the impact of strategies such as case isolation, home quarantine, social distancing and various post-lockdown restrictions on COVID-19 that might remain in force for some time.

The study modelled on Bengaluru and Mumbai suggests the infection is likely to have a second wave and the public health threat will remain, unless steps are taken to aggressively trace, localise, isolate the cases, and prevent influx of new infections.

The new levels and the peaking times for healthcare demand depend on the levels of infection spreads in each city at the time of relaxation of restrictions, they said.

The lockdown is currently upon us. It has given us valuable time. Let us test, trace, quarantine, isolate, practice better hygiene, search for a vaccine, etc. We should do these anyway, and these are being done. When and how to lift the lockdown is going to be a difficult decision to make, said Sundaresan.

It's clear that it's going to be phased. What our team is focusing on is to come up with tools to help the decision makers assess the public health impact of various choices, he said.

According to the experts, infectious diseases spread via contact between infectious and susceptible people. In the absence of any control measures, an outbreak will grow as long as the average number of people infected by each infectious person is more than one.

Once enough people are immune there will be fewer people susceptible to the infection and the outbreak will die.

However, when an outbreak is brought under control by social distancing and other interventions, it is possible only a small proportion of the population will have been infected and gained immunity, they said.

This means enough susceptible people may remain to fuel a second wave if controls are relaxed and infection is reintroduced.

Until the vaccine comes on the market, we have to remain alert Once sporadic cases occur here and there in the country, we immediately need to implement quarantine or social distancing locally for the people in that region, and also need to perform tests to identify positive cases irrespective of showing symptoms, Bhattacharya explained.

Note that these monsoon months are also flu season in many places of India. So, we should not ignore the early signs of the flu symptoms. Irrespective of symptoms, we need to increase tests in the hotspots to identify people and contain the surge, he said.

Sundaresan added that the timeline for a second wave will depend on a lot of circumstances which may change as the time passes.

Significant testing may have been underway, there may be behavioural changes with people becoming more careful about their hygiene, wearing masks may become more common, etc. All these responses may help restrict the second wave, he said.

A study published in The Lancet journal earlier this month modelled the potential adverse consequences of premature relaxation of interventions, and found it might lead to a second wave of infections.

The finding is critical to governments globally, because it warns against premature relaxation of strict interventions, the researchers said.

While interventions to control the spread of SARS-CoV-2 are in place, countries will need to work toward returning to normalcy; thus, knowledge of the effect of each intervention is urgently required, they said in the study.

According to a recent analysis by the Harvard Chan School of Public Health, the best strategy to ease the critical care burden and loss of life from COVID-19 might be on-again, off-again social distancing.

In the absence of such interventions, surveillance and intermittent distancing may need to be maintained into 2022, which would present a substantial social and economic burden, the researchers wrote.p

New Delhi, Feb 5: Kapil Baisala who opened fired at the Shaheen Bagh protest site last week is a member of the Aam Aadmi Party, police said on Tuesday, sparking a war of words between the BJP and the AAP.

While the BJP accused Chief Minister Arvind Kejriwal of "playing" with the security of the country, the AAP hit back, stating the saffron party was indulging "dirty politics".

Deputy Commissioner of Police (Crime Branch) Rajesh Deo said that Baisala and his father joined the AAP in early 2019.

Baisala's family, however, refuted the police's claim.

Kapil Baisala's uncle Fatesh Singh told PTI, "I have no idea where these photographs are circulating from. My nephew Kapil had no association with any political party nor does any other member from the family. My brother, Gaje Singh, (Baisala's father) fought assembly elections in 2008 on a Bahujan Samaj Party ticket and lost. After that no one from our family had any links with any political party."

Singh added that Baisala also doesn't have friends associated with the AAP or any other political party.

Gaje had also contested the 2012 civic body polls from the BSP, the police said.

The police officer said they seized Baisala's mobile phone and retrieved WhatsApp data.

On Saturday, Baisala fired two rounds in air at Shaheen Bagh. According to eyewitnesses, the man shouted "Hindu Rashtra Zindabad" and fired two rounds.

He was overpowered by the police and later arrested.

In the pictures, it was seen that he and his father joined the party in the presence of Atishi Marlena, Sanjay Singh and other leaders, sources said.

The police said on Thursday, Baisala, along with his friend Sarthak Larolla, went to Shaheen Bagh from his village on a bike.

Through CCTV footage, it was found they took the DND flyover, Maharani Bagh, Sarai Jullena and reached Holy Family hospital, a senior police officer said.

"Baisala was not comfortable on the bike as he had hidden the pistol near his waist. They entered the hospital's parking where he adjusted the pistol, used the washroom and headed towards Shaheen Bagh," the senior official added.

When they reached the protest site, Larolla left the spot with the motorcycle and Baisala's mobile phone. Later, Baisala fired two rounds in the air and was apprehended. The weapon was recovered from near the spot, the police said.

Larolla joined the investigation and the mobile phone was seized from his residence.

Baisala has been remanded to police remand for two days.

He had bought the pistol around seven years ago for his brother's marriage. The source of the weapon from where he procured it is yet to identified, police said.

The sources said Baisala was previously also involved in firing incident but was never caught nor was a case registered against him.

Hitting out at the AAP, BJP president J P Nadda accused Kejriwal of playing with the security of the country and said that the people will give the party a befitting reply.

"I want to make clear to Kejriwal that this country is bigger than any election, any government, and the country will not forgive those who play with its security. The people of Delhi will give a befitting reply," Nadda tweeted.

Senior AAP leader Sanjay Singh asked on whose directions was the Delhi Police accusing his party.

"Before the police revealed it (Baisala being an AAP member), how did BJP's Delhi president Manoj Tiwari come to know about it," Singh asked and accused the police of maligning the party.

Jun 23: The U.S. government on Monday restricted charter flights from India, accusing the nation of "unfair and discriminatory practices" by violating a treaty governing aviation between the two countries.

Air India Ltd. has been making flights to repatriate its citizens during the travel disruptions caused by the Covid-19 outbreak, but also has been selling tickets to the public, the Transportation Department alleged.

At the same time, U.S. airlines have been prohibited from flying to India by aviation regulators there, the DOT said in its order. The situation "creates a competitive disadvantage for U.S. carriers," the agency said in a press release.

Air India is advertising a schedule that is more than half of pre-virus operations, the department said. "The charters go beyond true repatriations, and it appears that Air India may be using repatriation charters as a way of circumventing" that nation's flight restrictions, the U.S. agency said.

The order becomes effective in 30 days, the department said.

Indian airlines must apply to the DOT for authorization before conducting charter flights so that it can scrutinize them more closely, it said. The department will reconsider the restrictions once India lifts restrictions on U.S. carriers.

The action against India follows weeks of DOT restrictions against Chinese airlines after the U.S. agency accused that nation of unfairly banning American carriers in the wake of the virus. On June 15, the U.S. announced it would agree to allow four flights a week from China after it allowed the same number by U.S. carriers.

Attempts to reach Air India and the Indian embassy in Washington after business hours were unsuccessful.