There are around 25,000 known species of bee worldwide (about 4000 species in the US, and over 250 species in Britain)....and there are probably more to be discovered! These 25,000 species can be divided into over 4000 genera (types of bees) belonging within 9 groups or 'families', all under the banner - or 'Super-family' - 'Apoidea'. Apoidea also includes 'sphecoid wasps', from which bees are believed to be descended. Click here to read about honey bees.
Infection with Naegleria causes the disease primary amebic meningoencephalitis (PAM), a brain inflammation, which leads to the destruction of brain tissue. Initial signs and symptoms of PAM start one to 14 days after infection and include headache, fever, nausea, vomiting and stiff neck. As the amebae cause more extensive destruction of brain tissue, this leads to confusion, lack of attention to people and surroundings, loss of balance, seizures and hallucinations.
When a person becomes infected with Mycobacterium leprae, the bacteria begin to multiply within the body. After three to five years, leprosy symptoms can begin. This period between becoming infected and the start of symptoms is called the leprosy incubation period..