Gargling salt water is a time-tested way to alleviate sore-throat pain. As a nasal lavage, it can help clear stuffy sinuses associated with colds and allergies. But, is gargling salt water effective against the symptoms of COVID-19?
British researchers will study the genes of thousands of ill COVID-19 patients to try to crack one of the most puzzling riddles of the novel coronavirus: why does it kill some people but give others not even a mild headache?
