2- Polio and Related Diseases
Before the vaccine was discovered, Polio had haunted the world and had taken the lives of millions. The responsible virus is excreted in the faeces of an infected person there for the disease is mostly common in areas where sanitation is poor. However epidemics can occur in hygienic conditions where individuals have not acquired immunity.
Hand, foot, and mouth disease (HFMD) and Enterovirus 68 (EV-D68) are related to polio. Both are found worldwide. HFMD causes mouth sores and skin rash. It is painful but not deadly. EV-D68 acts like polio. Most people have a stomach “flu,” some need hospitalization, and some develop paralysis and die.
3- Tick-borne Diseases in America
Tick is a bloodsucking parasite belonging to the order of arthropods. Tick bites can cause serious skin lesions and occasionally paralysis. Certain tick species transmit typhus, Lyme disease, relapsing fever, and Rocky Mountain spotted fever. Both are found throughout the US, although RMSF is more common in the west and Lyme in the east.
RMSF symptoms include fever, muscle pains and a profuse reddish rash if untreated the disease may be fatal.
Following 3 to 32 days incubation period Lyme disease patients develop skin rash, fever, malaise, headache and nick stiffness. Later 60% of patients suffer intermittent attacks of arthritis. Neurological and cardiac involvement occur a small percent of people.