It's a setback in the battle against the coronavirus. Cases of reinfection are emerging, suggesting immunity from the disease does not necessarily last long. That could complicate work on a vaccine.
Testing for SARS-CoV-2 is considered an important prerequisite for gradually lifting restrictions. But how much testing should there be and of whom?
The man contracted a different strain of the virus after fully recovering from an April infection, researchers said. Researchers said the case suggested reinfection may be possible even after immunization.
Nutrition expert Barry Popkin explains why obesity can have fatal implications in severe cases of COVID-19, making it harder to fight the disease.
Individuals in Belgium and the Netherlands have been reinfected with the coronavirus, Dutch media have reported. Some experts believe it is a good sign.
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