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Jun 13: Requiring the wearing of masks to prevent the spread of the novel coronavirus in areas at the epicenter of the global pandemic may have prevented tens of thousands of infections, a new study suggests.

Mask-wearing is even more important for preventing the virus' spread and the sometimes deadly COVID-19 illness it causes than social distancing and stay-at-home orders, researchers said, in the study published in PNAS: The Proceedings of the National Academy of Sciences of the USA.

Infection trends shifted dramatically when mask-wearing rules were implemented on April 6 in northern Italy and April 17 in New York City - at the time among the hardest hit areas of the world by the health crisis - the study found.

"This protective measure alone significantly reduced the number of infections, that is, by over 78,000 in Italy from April 6 to May 9 and over 66,000 in New York City from April 17 to May 9," researchers calculated.

When mask-wearing went into effect in New York, the daily new infection rate fell by about 3% per day, researchers said. In the rest of the country, daily new infections continued to increase.

Direct contact precautions - social distancing, quarantine and isolation, and hand sanitizing - were all in place before mask-wearing rules went into effect in Italy and New York City. But they only help minimize virus transmission by direct contact, while face covering helps prevent airborne transmission, the researchers say.

"The unique function of face covering to block atomization and inhalation of virus-bearing aerosols accounts for the significantly reduced infections," they said. That would indicate "that airborne transmission of COVID-19 represents the dominant route for infection."

The U.S. Center for Disease Control and Prevention on Friday urged organizers of large gatherings that involve "shouting, chanting or singing to strongly encourage the use of cloth face coverings to lower the risk of spreading the coronavirus."

China is aggressively pursuing a diverse range of tactics -- from cyber-attacks to recruiting insiders for economic espionage, Indian security agencies have warned. The specific alert circulated among key stakeholders suggests that Chinese operatives are not only planning to steal classified cutting-edge defense technology but also eyeing to recruit best academicians and researchers around the globe, especially from the US.

Sources said they have noticed that China has authorized an "aggressive program of stealing US science and technology information by recruiting Americans in the technology sector with access to trade secrets".

In the technology sector of the US, many Indians scientists are working at the forefront. "This is a serious matter for Indian government and security establishments," said a top source further adding that Chinese always pursue economic espionage because it suits their low cost manufacturing sector on the basis of stolen research and costly design developed by top companies across the globe.

"An alert was also issued in early January about Chinese cyber intrusion attempts at several companies where Indian researchers are working. The espionage attempt was to target UAV technology and certain top-end military equipment designs. After stealing the techniques and design, China starts producing these equipment domestically and sells at a cheaper rate, inflicting irreparable damage to the original equipment manufacturers," the sources in the security establishment observed.

Recently, the US accused China for targeting academia by sending researchers to American labs and using talent recruitment programme to steal scientific analysis. The US has also found that young recruits of the People's Liberation Army posing as students are entering into various universities across the globe to get research papers and recruit academia.

Earlier this year, the US charged a former Boston University student of visa fraud for failing to disclose the status as a lieutenant in the China's People's Liberation Army.

The US intelligence agencies have found that their "universities have become a soft target in the global espionage war with China".

In January this year, the US Department of Justice charged a leading academician at the Harvard University for hiding his alleged role in a Chinese government programme.

In July last year, the Federal Bureau of Investigation (FBI) Director Christopher Wray had revealed that the FBI is probing nearly 1,000 cases of economic espionage and attempted intellectual property theft, nearly all of them leading back to China.

Accordingly, Indian Missions have been informed about the threats being posed by Chinese spies and attempts to recruit Indian scientists and technologists working in the US and other parts of the world.

Sources further stated that security establishments in India have informed the scientist fraternity to be on alert amid threat posed by Chinese spies.

The Chinese had earlier recruited a personnel, Dongfan Chung, working at Boeing for economic espionage. Chung had stolen secret technology to benefit Chinese government and during the raid at his house more than 2.5 lakh classified pages related to Boeing were recovered.

"There has been intense debate on the international platforms regarding Chinese-sponsored theft of intellectual property. American agencies have gone on record to say that China was targeting trade secrets. In the backdrop of pandemic and global health crisis, Indian establishments in defence and technology sectors have been told to be extra cautious as China is planning to become the most advanced economy while the other countries are crippled by the highly contagious virus," the sources further added.

May 5: Global coronavirus deaths reached 250,000 on Monday after recorded infections topped 3.5 million, a news agency tally of official government data showed, although the rate of fatalities has slowed.

North America and European countries accounted for most of the new deaths and cases reported in recent days, but numbers were rising from smaller bases in Latin America, Africa and Russia.

Globally, there were 3,062 new deaths and 61,923 new cases over the past 24 hours, taking total cases to 3.58 million.

That easily exceeds the estimated 140,000 deaths worldwide in 2018 caused by measles, and compares with around 3 million to 5 million cases of severe illness caused annually by seasonal influenza, according to the World Health Organization (WHO).

While the current trajectory of COVID-19 falls far short of the 1918 Spanish flu, which infected an estimated 500 million people, killing at least 10% of patients, experts worry the available data is underplaying the true impact of the pandemic.

The concerns come as several countries begin to ease strict lockdowns that have been credited with helping contain the spread of the virus.

"We could easily have a second or a third wave because a lot of places aren't immune," Peter Collignon, an infectious diseases physician and microbiologist at Canberra Hospital, told Reuters. He noted the world was well short of herd immunity, which requires around 60% of the population to have recovered from the disease.

The first death linked to COVID-19 was reported on Jan. 10 in Wuhan, China after the coronavirus first emerged there in December. Global fatalities grew at a rate of 1-2% in recent days, down from 14% on March 21, according to the Reuters data.

DEATH RATE ANOMALIES

Mortality rates from recorded infections vary greatly from country to country.

Collignon said any country with a mortality rate of more than 2% almost certainly had underreported case numbers. Health experts fear those ratios could worsen in regions and countries less prepared to deal with the health crisis.

"If your mortality rate is higher than 2%, you've missed a lot of cases," he said, noting that countries overwhelmed by the outbreak were less likely to conduct testing in the community and record deaths outside of hospitals.

In the United States, around half the country's state governors partially reopened their economies over the weekend, while others, including New York Governor Andrew Cuomo, declared the move was premature.

In Britain, Prime Minister Boris Johnson, who battled COVID-19 last month, has said the country was over the peak but it was still too early to relax lockdown measures.

Even in countries where the suppression of the disease has been considered successful, such as Australia and New Zealand which have recorded low daily rates of new infections for weeks, officials have been cautious.

Australian Prime Minister Scott Morrison has predicated a full lifting of curbs on widespread public adoption of a mobile phone tracking app and increased testing levels.