Covid-19 reinfection casts doubt on virus immunity: study
Paris (AFP) - Covid-19 patients may experience more severe symptoms the second time they are infected, according to research released Tuesday confirming it is possible to catch the potentially deadly disease more than once.A study published in The Lancet Infectious Diseases journal charts the first confirmed case of Covid-19 reinfection in the United States -- the country worst hit by the pandemic -- and indicates that exposure to the virus may not guarantee future immunity.The patient, a 25-year-old Nevada man, was infected with two distinct variants of SARS-CoV-2, the virus that causes Covid...