Lalitgate: Cong questions PM's silence, says he too is liable

New Delhi, May 10: India's COVID-19 count crossed 60 thousand on Sunday, with Maharashtra being the worst-affected due to the infection so far, according to the Union Ministry of Health and Family Welfare.

The number of total confirmed cases in the country rose to 62,939, including 19,358 patients who have been cured and discharged or migrated, according to the Ministry.

The total number of active cases in the country, therefore, stands at 41,472.

The number of deaths in the country due to the infection reached 2,109 on Sunday.

While Maharashtra, with 20,228 cases is the worst-affected state, it is followed by Gujarat with 7,796 and the national capital, Delhi, with 6,542 cases. Tamil Nadu, is marginally behind Delhi with 6,535 cases.

New Delhi, Apr 17: With 1,076 new cases of COVID-19 in the last 24 hours and 32 deaths, India's total count of coronavirus cases has surged to 13,835, said the Union Ministry of Health and Family Welfare on Friday.

The total cases are inclusive of 1,766 cured and discharged patients, one migrated and 452 deaths. At present, there are 11,616 active COVID-19 cases in the country.

Before the lockdown, the doubling rate of COVID-19 cases was about three days, but according to the data of the past 7 days, the doubling rate of cases now stands at 6.2 days, said Lav Aggarwal, Joint Secretary, Health and Family Welfare.

"Before the lockdown, doubling rate of COVID-19 cases was about three days but according to the data of past 7 days, the doubling rate of cases now stands at 6.2 days," Aggarwal said during the daily briefing on COVID-19.

Aggarwal said that as many as 5 lakh rapid antibody testing kits are being distributed to States and Districts where a high case burden has been observed.

"A total of 1,919 dedicated COVID-19 hospitals with 1.73 lakh isolation beds, 21,800 ICU beds readied in India," he added. 

Washington, Apr 23: Air pollution over northern India has plummeted to a 20-year-low for this time of the year, according to satellite data published by US space agency National Aeronautics and Space Administration (NASA).
The US space agency's satellite sensors observed aerosol levels at a 20-year low post the countrywide lockdown, implemented to slow the spread of the novel coronavirus.

"We knew we would see changes in atmospheric composition in many places during the lockdown," said Pawan Gupta, a Universities Space Research Association (USRA) scientist at NASA''s Marshall Space Flight Center. "But I have never seen aerosol values so low in the Indo-Gangetic Plain at this time of year," added Mr Gupta.

Acting Assistant Secretary of State for South and Central Asia Alice G Wells tweeted, "These images from NASA were taken each spring starting in 2016 and show a 20-year low in airborne particle levels over India. When India and the world are ready to work and travel again, let's not forget that collaborative action can result in cleaner air."

The data published with maps show aerosol optical depth (AOD) in 2020 compared to the average for 2016-2019. Aerosol optical depth is a measure of how light is absorbed or reflected by airborne particles as it travels through the atmosphere.

If aerosols are concentrated near the surface, an optical depth of 1 or above indicates very hazy conditions. An optical depth, or thickness, of less than 0.1 over the entire atmospheric vertical column is considered "clean." The data were retrieved by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite.

In the first few days of the lockdown, it was difficult to observe a change in the pollution signature. "We saw an aerosol decrease in the first week of the shutdown, but that was due to a combination of rain and the lockdown," said Mr Gupta.

Around March 27, heavy rain poured over vast areas of northern India and helped clear the air of aerosols. Aerosol concentrations usually increase again after such heavy precipitation.

"After the rainfall, I was really impressed that aerosol levels did not go up and return to normal. We saw a gradual decrease and things have been staying at the level we might expect without anthropogenic emissions," Mr Gupta said.

On March 25, the Indian government placed its 1.3 billion citizens under a strict lockdown to reduce the spread of COVID-19. The countrywide mandate decreased activity at factories and severely reduced car, bus, truck and airplane traffic. Every year, aerosols from anthropogenic (human-made) sources contribute to unhealthy levels of air pollution in many Indian cities.

Aerosols are tiny solid and liquid particles suspended in the air that reduce visibility and can damage the human lungs and heart.

In southern India though, the story is a little hazier. Satellite data show aerosol levels have not yet decreased to the same extent. In fact, levels seem to be slightly higher than in the past four years. The reasons are unclear but could be related to recent weather patterns, agricultural fires, winds or other factors.

"This a model scientific experiment," Robert Levy, program leader for NASA's MODIS aerosol products, said about the lockdown and its effects on pollution.

"We have a unique opportunity to learn how the atmosphere reacts to sharp and sudden reductions in emissions from certain sectors. This can help us separate how natural and human sources of aerosols affect the atmosphere," Mr Levy added.