Emergence or reemergence seen in which of the following organisms -
Polio virus
Measles virus
Nipah virus
West Nile virus
<p> Nipah virus is a new infectious disease recognised in 1999. Emerging infectious diseases are those whose incidence in humans has increased during the last two decades or which threaten to increase in the near future. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:355-357. <\p>
Communicable diseases