Wearing cap, mask Adityanath sweeps outside Taj Mahal

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, Apr 8: The death toll due to the novel coronavirus rose to 149 and the number of cases to 5,194 in the country on Wednesday, according to the Union Health Ministry.

While the number of active COVID-19 cases is 4,643, as many as 401 people were cured and discharged and one had migrated, it said.

The total number of cases include 70 foreign nationals.

According to the ministry's data updated at 9 a.m., 25 new deaths have been reported since Tuesday.

Sixteen deaths were reported from Maharashtra, two each from Delhi, West Bengal, Haryana and Tamil Nadu and one from Andhra Pradesh.

Maharashtra has reported the most coronavirus deaths at 64, followed by Gujarat  and Madhya Pradesh at 13 each and Delhi at 9.

Telengana, Punjab and Tamil Nadu have reported seven fatalities each.

West Bengal has registered five deaths, Karnataka and Andhra Pradesh have reported four each, Uttar Pradesh, Haryana and Rajasthan have recorded three deaths each.

Two deaths each have been reported from Jammu and Kashmir and Kerala.

Bihar, Himachal Pradesh and Odisha reported one fatality each, according to the health ministry data.

However, a PTI tally of figures reported by various states as on Tuesday 9.45 p.m. showed 5,192 testing positive across the country and at least 162 deaths.

There has been a lag in the Union Health Ministry figures, compared to the numbers announced by different states, which officials attribute to procedural delays in assigning the cases to individual states.

The highest number of confirmed cases in the country are from Maharashtra at 1018, followed by Tamil Nadu at 690 and Delhi with 576 cases.

Telengana has reported 364 COVID-19 cases followed by Kerala at 336.

Rajasthan has 328 cases, Uttar Pradesh has 326 and Andhra Pradesh reported 305 coronavirus cases.

Novel coronavirus cases have risen to 229 in Madhya Pradesh, 175 in Karnataka and 165 in Gujarat.

Haryana has 147 cases, Jammu and Kashmir has 116, West Bengal has 99 and Punjab has 91 positive patients so far. Odisha has reported 42 coronavirus cases.

Thirty- eight people were infected with the virus in Bihar while Uttarakhand has 31 patients and Assam 27.

Chandigarh  and Himachal Pradesh have 18 cases each while Ladakh has 14 positive patients so far.

Ten cases each have been reported from the Andaman and Nicobar Islands and Chhattisgarh. 

Goa has reported seven COVID-19 infections, followed by Puducherry at five cases. Jharkhand has reported four cases and Manipur two. 

Tripura, Mizoram and Arunachal Pradesh have reported one case each.

"State-wise distribution is subject to further verification and reconciliation," the ministry said on its website.

In a startling revelation, cybersecurity researchers have claimed that a hacker has posted personal details of nearly 2.9 crore Indian job seekers at one of the hacking forums on the Dark Web for free.

As part of the regular sweep over the Deep Web and Dark Web, researchers from cybersecurity firm Cyble came across an interesting item, where a threat actor posted 2.3GB (zipped) file on one of the hacking forums.

"The leak actually has a lot of personal details of millions of Indians Job seekers from different states," Cyble said in its blog on Friday.

This breach includes sensitive information such as email, phone, home address, qualification and work experience etc from job seekers spanning across states, from New Delhi to Mumbai and Bengaluru. 

Cybercriminals are always on the lookout for such personal information to conduct various nefarious activities such as identity thefts, scams, and corporate espionage.

"It appears to have originated from a resume aggregator service given the sheer volume and detailed information," it added.

Cyble indexed this information at ‘AmIbreached.com; – Cyble's data breach monitoring and notification platform.

Cyble researchers have identified a sensitive data breach on the dark web where an actor has leaked personal details of nearly 29 million Indian job seekers from various states. 

"Cyble's team is still investigating this further and will be updating their article as they bring more facts to the surface,” it said in a statement.

Cyble said it has acquired the leaked data. 

The same cyber security firm earlier exposed that Bengaluru-based edtech firm Unacademy was hacked.

According to Cyble researchers, nearly 22 million Unacademy user accounts were affected and the data was dumped and sold on Dark Web.

'We would like to assure our users that no sensitive information such as financial data or location has been breached," said Hemesh Singh, Co- Founder and CTO, Unacademy, in a statement.

In April, hackers sold personal data of a whopping 267 million Facebook users for just Rs 41,500 (approximately 500 Euros) that includes email addresses, names, Facebook IDs, dates of birth and phone numbers.

No passwords of the 267 million Facebook users were exposed by the hacker, according to Cyble.