“…The similar trends of unintended decline in other respiratory infectious diseases has already been reported from other countries such as Taiwan, Singapore, and China. [5][6][7][8][9][10] Results of our study showed that the nationwide use of face mask, regular hand washing, use of sanitizers, social distancing, closure of Malls, schools, colleges, universities, bane on public gathering, massive temperature check, lockdown, extensive testing and quarantine, dramatically reduce the risk of other respiratory diseases. The use of mask is proved to be helpful not only for infectious but also for the prevention of non-infectious respiratory diseases.…”