সংক্ষিপ্ত বিবরন : These Studies are made on the basis of a series of investigations that took place during the epidemic of influenza at Pittsburgh, 1918. From the last week of September to the first days of October, it rapidly spread through the community. Pittsburgh had been cautioned of the epidemics’ imminent arrival based on the suffering of Boston, where the disease made its arrival during the late weeks of August. To a certain extent, the warning from the East permitted taking measures to control its devastations. Despite the necessary steps to protect the public health the epidemic progressed with all its virulence, rapidly picking out the vulnerable individuals and resulting in a high fatality rate.