In which regions is the NWS virus found?

The NWS virus (New World Arenavirus) is primarily found in South America and the Caribbean. This classification is based on the geographical distribution of the specific arenaviruses categorized as New World viruses, which tend to be endemic to these regions. The presence of Mice species, particularly the rodent reservoirs that carry the virus, further supports its localization in South America and the Caribbean. Each of these areas may experience varying levels of outbreak risk, largely influenced by the ecology and the local conditions that favor the rodent hosts.

The NWS virus is not associated with the other regions mentioned in the options, as the viruses found in North America, Europe, Asia, Australia, and New Zealand belong to different classifications or are less prevalent. The clear understanding of the geographical distribution of the NWS virus is crucial for public health monitoring and response strategies in the affected regions.