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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
On average, the stomach produces 2 L of hydrochloric acid per day.
The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.
Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.