Emergence or reemergence seen in which of the following organisms -
<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>
Polio virus
Measles virus
Nipah virus
West Nile virus
Communicable diseases