How did Jonas Salk affect the environment?

When was smallpox eradicated? What is Sinus headache that turns to a bump on the head then turns to scab? Gray hair turning yellow with heat from curling iron and hair drying any suggestions? Meningioma what is considered a small meningioma? What is electrical activity of the heart is called an? You have shingles how long are you infectious? Can sulfamethoxazole tmp dare a STD? How come my parents are upset with me for self harming? What diseases did they have in the Industrial Revolution? Excessive sweating of hands and feet? Who do you vomit blood after being hit in the stomach? What kind of rod shaped bacteria live in the intestines? Respiratory disease is commonly known as whooping cough? Why are cases of food poisoning increasing? Why do smokers struggle to complete their Nicotine Replacement Therapy? Having nausua and diahrea can you be pregnant? Where ginkgo can be found? Can you still have an colonoscopy if you stop taking low dose aspirin three days before the test? What is chronic an-ovulation? How many teeth does a 8 year old child have?