A study of 37 asymptomatic individuals with SARS-CoV-2 infections in Wanzhou, China, found that they had a longer viral shedding period (19 days) compared to symptomatic individuals (14 days). Asymptomatic individuals also showed lower levels of virus-specific IgG and neutralizing antibodies in the acute phase, with significant reductions in these markers during the early convalescent phase. Asymptomatic individuals had lower levels of 18 pro- and anti-inflammatory cytokines, suggesting a weaker immune response to SARS-CoV-2. These findings indicate that asymptomatic individuals may have a reduced immune response and lower antibody levels, which could impact immunity strategies and serological surveys. The study also highlights the importance of timely RT-PCR and serological testing for accurate estimation of asymptomatic infections. The duration of SARS-CoV-2 RNA shedding was found to be shorter in this study compared to previous reports, with asymptomatic individuals having a longer shedding period. The study also found that the immune response in asymptomatic individuals declined more significantly than in symptomatic individuals, with a higher proportion becoming seronegative. The study emphasizes the need for further research to determine the duration of antibody-mediated immunity and the role of asymptomatic individuals in the spread of SARS-CoV-2. The findings suggest that asymptomatic individuals may be more likely to become seronegative, highlighting the importance of timely serosurveys to study the true infection rate. The study also notes that the proportion of asymptomatic infections may be underestimated due to the selection of high-risk individuals for testing. The study provides important insights into the clinical features and immune responses of asymptomatic SARS-CoV-2 infections, which could inform public health strategies and the management of the pandemic.A study of 37 asymptomatic individuals with SARS-CoV-2 infections in Wanzhou, China, found that they had a longer viral shedding period (19 days) compared to symptomatic individuals (14 days). Asymptomatic individuals also showed lower levels of virus-specific IgG and neutralizing antibodies in the acute phase, with significant reductions in these markers during the early convalescent phase. Asymptomatic individuals had lower levels of 18 pro- and anti-inflammatory cytokines, suggesting a weaker immune response to SARS-CoV-2. These findings indicate that asymptomatic individuals may have a reduced immune response and lower antibody levels, which could impact immunity strategies and serological surveys. The study also highlights the importance of timely RT-PCR and serological testing for accurate estimation of asymptomatic infections. The duration of SARS-CoV-2 RNA shedding was found to be shorter in this study compared to previous reports, with asymptomatic individuals having a longer shedding period. The study also found that the immune response in asymptomatic individuals declined more significantly than in symptomatic individuals, with a higher proportion becoming seronegative. The study emphasizes the need for further research to determine the duration of antibody-mediated immunity and the role of asymptomatic individuals in the spread of SARS-CoV-2. The findings suggest that asymptomatic individuals may be more likely to become seronegative, highlighting the importance of timely serosurveys to study the true infection rate. The study also notes that the proportion of asymptomatic infections may be underestimated due to the selection of high-risk individuals for testing. The study provides important insights into the clinical features and immune responses of asymptomatic SARS-CoV-2 infections, which could inform public health strategies and the management of the pandemic.