Countries should consider recommending passengers wear masks on long-haul flights to counter the latest Omicron subvariant of COVID-19 given its rapid spread in the United States, World Health Organization (WHO) officials said on Tuesday.In Europe, the…

Genomic sequencing allowed the world to track new coronavirus variants throughout the pandemic. Now British researchers plan to use it to better understand a host of other respiratory pathogens, from influenza to respiratory syncytial virus (RSV).The w…