Why does the CDC destroy insects and arachnids when trying to single cell parasi

Question

Why does the CDC destroy insects and arachnids when trying to single cell parasites like Yersinia Pestis, Borrelia burgdorferi, malaria or Yellow fever? A California farmer developed a low-grade fever, myalgia, and cough. A chest X-ray revealed an infiltrate in the lung. Microscopic examination of the sputum revealed round, budding cells. A sputum culture grew mycelia and arthroconidia. a. What type of organism is most likely the cause of the symptoms? b.How is this disease transmitted? c. How might it be prevented? The mortality rate due to malaria is estimated to be at over 1 million deaths per year, and because of global warming the disease is spreading. In 1997, 2,364 cases of malaria were reported in the United Kingdom How is malaria getting to England?

Explanation / Answer

(a) Dimorphic fungi

(b) The dimorphic fungi cause infection following:-
inhalation of spores (conidia) into the pulmonary system.
In the lower respiratory tract the conidia transform into the yeast phase, which is susceptible to phagocytosis by the pulmonary macrophages.
These yeast forms may persist in the nonimmune host. As the yeast-laden macrophages are transported via the lymphatics to the peribronchial and mediastinal lymph nodes, hematogenous dissemination may occur.

(c) prevention:- The CDC recommends that immunocompromised people avoid going into thickly wooded areas where the fungi occur in high numbers. Currently, there are no vaccines available to protect individuals from the fungi that cause blastomycosis, but researchers are trying to develop a vaccine.

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