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Vaccines prevent between 2.5 and 4 million deaths every year.
Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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