One case of coronavirus disease 2019 (COVID-19) in a patient co-infected by HIV with a low CD4+ T-cell count

•Patients who are infected by SARS-Cov-2 and HIV tend to have a longer disease course and slower generation of specific antibodies•For suspected cases of COVID-19, nucleic acid detection, gene sequencing and antibody detection can confirm the diagnosis, respectively•SARS-Cov-2 may damage lymphocytes, especially T-lymphocytes, and the immune system is impaired during the period of disease The ongoing outbreak of COVID-19 that began in Wuhan, China, become an emergency of international concern when thousands of people were infected around the world. This study reports a case simultaneously infected by SARS-Cov-2 and HIV, which showed a longer disease course and slower generation of specific antibodies. This case highlights that a co-infection of SARS-Cov-2 and HIV may severely impair the immune system.