==bat derived virus==
*rabies in 1936
*Hendavirus in 2000
*Nipah virus in 2002
*ebolavirus in 2005
*...
==bat==
*class ''Mammalia'', order ''Chiroptera'', 1,224 species
**seasonal hibernation in some species
==bat derived virus==
*rabies in 1936
*Hendavirus in 2000
*Nipah virus in 2002
*ebolavirus in 2005
*...
===nipah===
*El Niño phenomena in 1997-98 promoted breeding of bats
*bat contaminated date palm sap with nipah virus
*later direct human-to-human transmission observed in nipah outbreak in Malaysia
==influenza==
*distinct lineage of flu A in bat
**H17N10, H18N11
*potential generator of pandemic influenza
==bat surveillance==
*karstic areas in northern part of Viet Nam
**karst landscape - many caves
**paradise for bats
**bat hunters in northern Viet Nam