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The prospect of getting reinfected with COVID-19 -- and getting even sicker the second time around -...
China rushed Tuesday to test an entire city of nine million people within days after a minor coronav...
Two late-stage COVID-19 medical trials have been paused in the space of 24 hours over potential safe...
The World Health Organization chief warned Monday against just allowing the new coronavirus to sprea...
COVID-19 patients may experience more severe symptoms the second time they are infected, according t...
Get well messages for US President Donald Trump poured in from foreign capitals on Friday after he a...
New daily coronavirus infections in Australia's hotspot state Victoria have fallen to a near fou...
UN Secretary-General Antonio Guterres called Wednesday for an "immediate infusion" of $15 ...
US biotech firm Moderna won't seek an emergency use authorization for its coronavirus vaccine be...
Residents of infection hotspot Madrid are to be barred from leaving except on essential trips under ...