countries and requiring british travelers returning from those countries to quarantine in hotels. each time the coronavirus spreads from one person to the next it has the potential to mutate and that is the message the director of south africa's center for epidemic response is trying to get across to wealthy countries and individuals. he tweeted i would like to plead all bill airs in the world to support africa and south africa financially to control and extinguish variants by protecting its poor and oppressed population we will protect the world. here in the u.s. the federal government is sending two military medical teams to michigan to support hospitals overwhelmed by a fourth surge in covid cases driven by the highly contagious delta variant as well as colder weather driving more people indoors. 44 military physicians, nurses and respiratory therapists will treat patients for 30 days.