The NIH has advised health authorities to declare high alert due to chance of rapid spread of 7 diseases including Covid-19 (Coronavirus) during winter season. In an advisory called Seasonal Awareness and Alert Letter (Saal) it has been informed that the diseases such as Covid-19, Crimean-Congo Hemorrhagic Fever virus, dengue fever, diphtheria, pertussis, seasonal flu and extensively drug-resistant (XDR) typhoid can spread rapidly during October to February. “On the basis of last 5 year data, National Institute of Health recommends for all federal, provincial and district health departments (HD) to keep a continuous surveillance & watch on the anticipated seasonal public health threats and taking of all preventive or curative measures in this context,” it states.