KARACHI:
Microbiologists at the University of Karachi responded on
Monday to the panic being generated by recent deaths caused by the rare
parasite, naegleria fowleri. A seminar on how to avoid contracting the
deadly parasite during Ramazan was organized by the department of
microbiology.
A panel of clinical microbiologists and immunologists tried to banish
misconceptions about the deadly organism. “Naegleria fowleri is a
parasite, not a bacteria or virus as being reported in the media,”
pointed out Dr Shahana Urooj Kazmi, the president of the Pakistan
Society for Microbiology and an ambassador for the American Society for
Microbiologists. She said that the biological and chemical mechanisms
with which the parasite destroys brain tissue are still unclear. It
multiplies in the brain by splitting into two and causes inflammation,
severe headaches, neck rigidity and mental confusion. When brain tissues
are extensively damaged, coma and death usually follow. This fatal
infection, which acts rapidly, is known as ‘primary amoebic
meningoencephalitis’ and usually kills the patient within 72 hours after
symptoms appear. Prof. Kazmi added that naegleria fowleri is found
across the globe in soil and warm water, including pools of hot
industrial waste. The parasite has also been isolated from mineral water
in Mexico.Dr Farooq Haseeb highlighted the unusual life-cycle of naegleria and said that it is capable of going through a full life cycle without passing through the parasitic stage. The amoeba can survive in diverse environments, including water and brain tissue.