The world surpassed two sobering coronavirus milestones Sunday -- 500,000 confirmed deaths, 10 million confirmed cases.
The best evidence comes from patients themselves, and some experience a variety of symptoms long after their infections have cleared.
Asymptomatic transmission of coronavirus appears to be worse than SARS or influenza, according to a report by MarketWatch.
Health care workers are reckoning with the psychological toll of the virus fight, coupled with fears that the disease could flare anew later this year.
How long immunity lasts varies depending on the virus, and it's not yet known how long COVID-19 survivors might have that protection.
Trying to stay safe during a global pandemic is hard enough, but people in Southwest desert cities like Phoenix and Las Vegas are also trying to protect themselves from the brutal heat.
A commentary on paramedics responding home, by Steve Whitfield.
New product and procedure safely exhausts all patient-exhaled air from the back of an ambulance.
But medical workers, seen as possible sources of contagion, face another staggering challenge in these countries: the stigma associated with the illness.
Matthew Konya on the intersection of behavioral health and emergency medical services.