Schistosomiasis (also known as Bilharzia, snail fever, or Katayama fever) is caused by flatworm parasites that live in the blood vessels of the bladder and intestines. Schistosomiasis - also known as bilharzia, snail fever, or Katayama fever - is caused by flatworm parasites that live in the blood vessels of the bladder and intestines. Health Matters
A Tornado warning means A tornado has been  spotted/touched down in your alert area. You should take  cover if a tornado warning is issued for your area;  go into a cellar, or the lowest, most inner part of your house  where there are no windows (a downstairs or basement bathroom is  ideal).
It is important to know if a tornado is coming so you can get to a safe place such as a basement before it hits. If you have no warning and don't go for cover you are more lik â¦ ely to be injured or killed.14 people found this useful.t is important to know if a tornado is coming so you can get to a safe place such as a basement before it hits. If you have no warning and don't go for cover you are more lik â¦ ely to be injured or killed. 14 people found this useful.