Household COVID-19 secondary attack rate and associated determinants in Pakistan; A retrospective cohort study. oleh Amjad Khan, Muhammad Hassan Mushtaq, Javed Muhammad, Anupam Sule, Ali Akbar, Khunsa Junaid, Ali Akram Khan, Taimoor Akram Khan, Ubaid Khan, Fatmee Waqar, Asghar Khan, Muhammad Akib Warraich, Abdul Jabbar, Abbas Al Mutair, Saad Alhumaid, Maha Al-Mozaini, Kuldeep Dhama, Muhammad Fayaz Khan, Ali A Rabaan