Norovirus ( the 'cruise ship' diarrhea virus) - 12 to 48 hours (very short incubation period) Pinworms - 1 to 2 months Rabies - 4 to 6 weeks, but can last years (very long incubation period) Respiratory Syncytial Virus (RSV) - 2 to 8 days Rhinovirus (common cold) - 2 to 3 days...