Quarantined

An alien ship has crash landed in the mountains outside New York. On board is a virus unlike any other, one that infects through sex, driving its victims insane with lust before forcing them to act as hosts for its spawn. The alien rampages its way though cabins and camp grounds, leaving dazed and delirious victims in its wake in an attempt to infect the entire planet.

Fortunately for mankind a second ship arrives to eradicate the virus. Unfortunately that means Earth is under quarantine until the virus can be destroyed.