Faster-spreading COVID variants are sending children and young adults to hospital with serious symptoms.
Dr Khan examines fears that the coronavirus variant which began in South Africa might be able to evade current vaccines.
Bangladesh extends nationwide lockdown for yet another week to counter the spike in infections, says official.
India continues reporting over 200,000 daily cases, but Australia and New Zealand open quarantine-free 'travel bubble'.
Delhi to be under curfew as India sees 273,810 new cases, taking total caseload past 15 million and record 1,619 deaths.
Quarantine-free travel agreement allows families to reunite and airlines are adding more flights to meet demand.
Anger rises alongside COVID-19 infections in Canadian province, as healthcare workers want more action from government.
New COVID-19 restrictions have been imposed in and around Buenos Aires in effort to stem recent rise in infections.
Record cases being reported across the world but some good news from Australia and Israel.
Health regulator sets conditions for lifting the pause on Johnson & Johnson's COVID-19 vaccine rollout.
Scott Morrison says he will not put at risk Australians' nearly coronavirus-free lifestyle.
The number of lives lost to the pandemic is almost equal to the population of Kyiv, Ukraine or Caracas, Venezuela.
India faces a ferocious new coronavirus wave with another record high of 234,692 new cases on Saturday.
Experts warn authorities' divergent policies may damage trust and increase hesitancy in countries facing shortages.
The government of Maharashtra state, home to Mumbai, imposed lockdown-like curbs on Wednesday for 15 days.
Money will go to genomic sequencing, research centres for genomic epidemiology and a national bioinformatics network.
Only AstraZeneca accepted Johnson & Johnson’s pitch, while Pfizer and Moderna declined, sources told the WSJ.
Chancellor Merkel says gov't must be able to impose 'emergency brake' restrictions on regions with high infection rates.
Researchers currently do not know how long vaccines provide protection against the coronavirus.
Biden's chief science officer says 'vulnerable' will be first to get boosters as studies on jab protections continue.