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.
In about 98% of cases, polio is a mild illness, with no symptoms or with viral-like symptoms. In paralytic polio, the virus leaves the digestive tract, enters the bloodstream, and then attacks nerve cells. Fewer than 1%-2% of people who contract polio become paralized.oliomyelitis, shortened, became polio. For a time, polio was called infantile paralysis, though it did not affect only the young. Cause of Polio. Polio is caused by one of three types of poliovirus (which are members of the Enterovirus genus).