Scientists at the US Department of Energy's Pacific Northwest National Laboratory estimates that droplets encased in mucus could remain moist for up to 30 minutes and travel up to about 200 feet
Among the measures set to be announced will be raising the number of people allowed to enter Japan to 5,000 a day from the current 3,500, according to media reports
India has so far administered 1,742,436,288 vaccine doses. That is 4075.46 per cent of its total caseload, and 124.36 per cent of its population
Chief Executive Carrie Lam renewed an appeal for support from the global financial hub's 7.5 million people, many of whom are fatigued by some of the world's most stringent restrictions
The unemployment rate stayed at 4.2%, matching the lowest reading since 2008 when it bottomed out at 4.0%
The average daily cases during last week were 50,476, and 30,615 new cases were reported in the last 24 hours
Many more vaccines are expected to be rejected as African nations and Covax said that from January they would not accept vaccines with less than two-and-a-half months' shelf life
ZyCoV-D is already approved by the regulator for use in children aged 12 and more
Mumbai did not record any Coronavirus death for the second consecutive day on Wednesday, while 255 people tested positive for the infection, says the civic body.
As more and more Covid restrictions in Kerala continue to be lifted, the state on Wednesday saw 12,223 new Covid cases while the positivity rate was at15.75%, says state Health Minister Veena George.
The average daily cases during last week were 50,476, and 27,409 new cases were reported in the last 24 hours; the daily case positivity rate declined to 3.63 per cent on Wednesday
The number of new coronavirus cases globally fell by 19% in the last week while the number of deaths remained stable, according to the World Health Organisation.
China has maintained a "zero tolerance" policy toward the Covid-19 pandemic and used stringent lockdowns and testing to root out infections, reports Yonhap news agency
Hong Kong hospitals overflow on Wednesday as new Covid cases defy city's Zero-Covid Policy, while China's Xi Jinping says it was local government's task to curb the situation.
Strong demand helped push up prices charged by hosts, with average daily rates during the fourth quarter up 20% at $154
Janet Yellen is due to participate virtually in the meeting of finance ministers and central bank governors from the Group of 20 major economies on Thursday and Friday
So far, 94 per cent of Singapore's eligible population have completed their full vaccination regime under the national vaccination programme
Meanwhile, a total of 1,149 new patients were hospitalized, compared to 1,393 the week before
Britain sees signs of a diplomatic opening with Russia over Ukraine, but the latest intelligence is still not encouraging, says PM Boris Johnson
Over the past two weeks, cases of COVID-19 have more than doubled in six countries in eastern Europe (Armenia, Azerbaijan, Belarus, Georgia, the Russian Federation, and Ukraine)