COVID-19 Aftereffects (Long COVID) Associated with Wuhan, Delta, and Omicron Variants Reported in Japanese Hospitals

Abstract

COVID-19 patients who visited hospitals in Japan reported aftereffects, also known as Long COVID or Post COVID symptoms. The studycompared the Long COVID symptoms caused by the original Wuhan, Delta, and Omicron variants. The analysis of COVID-19 lingering symptoms(Post COVID) conducted by researchers in Japan have been included. Symptoms may last from one month to one year, putting a strain on thehealth care system. According to a joint study done by Osaka University and Toyonaka City on patients mostly infected with Omicron, one in fivepatients experienced aftereffects one month after their recovery. The report indicated that the symptoms improved over time. A majority of the patients reported difficulties with their daily activities. About 14%of the patients experienced aftereffects even one year after being discharged from hospitals, according to data recorded during Delta and previous waves that were presented to the Japanese government. Patients hospitalized during the Delta and Wuhan waves for SARS-CoV-2 infection showed a 50% reduction in symptoms between three and six months, according to a longitudinal follow-up study of sequelae. According to a gender-wise study, symptoms improved more quickly in women than in men. Compared to older patients, younger patients recovered a little faster in the firsttwo months. Patients infected during the first four non-Delta waves recovered slower than those infected during the Omicron surge. Longitudinalstudies of persistent symptoms are needed to develop treatments and possibly the COVID-19-specific drugs.