If the monarch butterfly lives west of the Rocky Mountains, then it will hibernate in and around Pacific Grove, California in eucalyptus trees. Monarch butterflies use the very same trees each and every year when they migrate, which seems odd because they arent the same butterflies that were there last year. These are the new fourth generation of monarch butterflies, so how do they know which trees are the right ones to hibernate in?
Poliovirus can be transmitted through contaminated water and food or through direct contact with someone infected with the virus. Polio is so contagious that anyone living with a recently infected person is likely to become infected, too.oliovirus can be transmitted through contaminated water and food or through direct contact with someone infected with the virus. Polio is so contagious that anyone living with a recently infected person is likely to become infected, too.
Polio, also called poliomyelitis is a highly contagious infectious disease caused by one of three related viruses. Polio is a very serious disease, which can lead to paralysis or even death. Once a person is exposed to polio, it usually takes about three to five days for symptoms to appear. In about 95 percent of polio cases, infection from the polio virus causes no symptoms or serious effects. In about 5 percent of cases, the polio virus manifests in a mild form (abortive polio) with flu-like symptoms, in a nonparalytic form (aseptic meningitis) or in a severe form called paralytic polio. People who have minor or nonparalytic forms recover completely.