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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.
The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
![Medical assistants are often involved in confidential conversations between the physician and the pa](https://biology-forums.com/gallery/47/medium_27_19_05_16_12_15_23_23512770.jpeg)
![The medical assistant holds the position of the thermometer while the temperature is being obtained.](https://biology-forums.com/gallery/47/medium_665046_06_03_17_1_45_26_262972351.jpeg)