Question

select one of tge emerging zoonotic disease below. briefly discuss (a) the historical and economic perspectives of the emerging zoonoticc disease, b) the microoorganism that causes the disease, (c) the most common route of transmission, (d) prevention methods for the support your position and remember to reference the assigned reading as well.

a. river blindness

b. Dengue fever

c. west nile virus

d. choose one of your one

Answer 1

River blindness

a.Historical and emerging perspective of the emerging zoonotic disease

This infectious disease is found in Sub Saharan Africa, Yemen and in isolated areas of Central and South America.The flies are found near the river and so the name of the disease.It is reported as a neglected tropical diseases by WHO.It was first reported by physician Rodolfo Rodens when the vision were lost.

b.Causative organism

Onchocerca volvulus is the causative organism.It is a female black fly called Simuliun damnosum . It is a parasite.

The common symptoms are itching,bumps under skin and blindness.

c.Route of transmission

The infection is transmitted by the bite of black fly belonging to Simuliun type.When not bites the parasitic worm enters the skin.Many bites are required to cause the infection

d.Prevention

As there are no vaccine available prevention is the best way to stay away from this infection

• Avoid going to river where this flies are found
• use of insect repellent
• Good clothing which covers the entire body
• Spraying insecticide where the infection sre possible
• Can be eradicated by treating the infected prople twice in a year
• Administration of ivermectin every six to twelve mont
• Doxycylin weakens the bacteria Wolbachia.