Saturday, October 20, 2012

Brain-eating amoeba

PHYSICIANS M. Fowler and R.F. Carter first described human disease caused by amoebo flagellates in Australia in 1965. Their work on amoebo flagellates has provided an example of how a protozoan can effectively live both freely in the environment and in a human host. 

Since 1965 more than 144 cases have been confirmed in a variety of countries. In 1966 Fowler termed the infection resulting from N. fowleri primary amoebic meningoencephalitis (Pam) to distinguish this central nervous system (CNS) invasion from other secondary invasions caused by other true amoebas such as entamoeba histolytica.

A retrospective study determined the first documented case of Pam possibly occurred in Britain in 1909. Onset symptoms of infection start about five days (range is from one to seven days) after exposure.

The initial symptoms include, but are not limited to, changes in taste and smell, headache, fever, nausea, vomiting and stiff neck. Secondary symptoms include confusion, hallucinations, lack of attention, ataxia, and seizures. After the start of symptoms, the disease progresses rapidly over three to seven days, with death occurring from seven to 14 days after exposure.

Countries where cases of amoebia are found are the US, Chezk Republic, New Zealand, Pakistan and the UK. It is a universal issue. International organisations must get together to find out its solution to save human lives.

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