Southwest Airlines canceled more than 1,000 flights Sunday and nearly 350 so far Monday, part of a major weekend service disruption that the carrier...
The Canadian government announced it will require most commercial rail, air and ship passengers to be fully vaccinated against Covid-19 by the end of October.
The World Health Organization endorsed the RTS,S/AS01 malaria vaccine for children, the first against the mosquito-borne disease that kills more than 400,000 a year.
