|
|
Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.
Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
![The Blue-bearded Bee-eater Nyctyornis athertoni is a large species of bee-eater found in South Asia.](https://biology-forums.com/gallery/47/medium_12359_29_04_12_6_13_32.jpeg)
![Campylobacter bacteria are found in most chicken meat. If chicken meat is not well cooked or raw mea](https://biology-forums.com/gallery/47/medium_28062_06_01_13_9_20_05.jpeg)
![The greatest bone mass is found around age 30 for both men and women, with the later decline being f](https://biology-forums.com/gallery/47/medium_102911_16_06_15_7_18_43_220291584.jpeg)