HOUSTON : Covid-19 patients infected with the novel coronavirus for a second time might experience more severe symptoms, according to a study which is the first to confirm a case of reinfection with the virus in the US.The study, published in the journal Lancet Infectious Diseases, found evidence that an individual with no known immune disorders or underlying conditions was infected with the SARS-CoV-2 virus in two separate occurrences.According to the scientists, including those from the University of Nevada in the US, the patient, a 25-year old male, was infected with two distinct SARS-CoV-2 variants within a 48-day time frame, while testing negative in between infections.The study noted that the patient's second infection was more.