Omicron appears to cause less severe illness than earlier variants of the coronavirus but is more resistant to the two-dose Pfizer-BioNTech vaccine widely used in...
Global health experts said a confluence of factors, including sometimes unpredictable deliveries from vaccine manufacturers and limited health-care capacity, have created challenges in ensuring doses...
The variant identified in South Africa is not yet proved to be more lethal than others, including similarly highly transmissible variants recently detected in Britain...
The findings, the result of a weeklong investigation, are the first evidence of war crimes in Tigray, where government troops and separatist forces have been...