Coronavirus disease (COVID-19) and tuberculosis (TB) are two respiratory infectious diseases with a high incidence of transmission, mainly via respiratory droplets and both can weaken the immune system and lower the number of CD4新型冠状病毒(简称新冠病毒)肺炎(COVID-19)和结核病是两种主要经呼吸道飞沫传播力极强的呼吸道传染病,发病率高,均可导致患者免疫力下降,CD4