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Did you know?
About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
![Two important changes occur in the upper airway in croup:The epiglottis swells, thereby occluding th](https://biology-forums.com/gallery/47/medium_14755_05_10_12_4_11_17_92641447.jpeg)
![An intermediate shaft drives the oil pump on this overhead camshaft engine. Note the main gallery ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_2_34_13_29609181.png)