Wuhan was premier epicentre for coronavirus disease 2019 (COVID-19), where first 41 sick individuals experiencing severe pneumonia were reported after exposing to bats and pangolins at Huanan Seafood Wholesale market. Next sick individuals were recorded from same local place by Chen and colleagues. However, several ill individuals in outbreak did not expose to animals, indicates person to person droplets spread is highly possible. Few ill cases of heavy unexplained pneumonia were mentioned from Wuhan, China in December 2019. Bronchoalveolar lavage (BAL, also called bronchoalveolar washing) from a catalogue case was described as novel coronavirus (COVID-19) on 3rd January 2020 by Zhu and colleagues and thereafter World Health Organization (WHO) announced this disease as an epidemic. The disease quickly spread all over the world and the World Health Organization (WHO) declared severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) disease [named coronavirus disease 2019 (COVID-19)] a pandemic on 11th March 2020.
