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In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

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Medication errors are more common among seriously ill patients than with those with minor conditions.

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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Several species of squirrels have melanistic phases. In large parts of United States and Canada, the Several species of squirrels have melanistic phases. In large parts of United States and Canada, the
Human skull Human skull
The Freudian Structure of Personality The Freudian Structure of Personality
A karyogram of the human chromosome set, showing the distinctive banding pattern of each chromosome. A karyogram of the human chromosome set, showing the distinctive banding pattern of each chromosome.
Overview of the components of the human digestive system, together with a brief description of their Overview of the components of the human digestive system, together with a brief description of their
Manhattan plots resulting from a genome-wide association study of seven common human disease Manhattan plots resulting from a genome-wide association study of seven common human disease
Video: First Stage of Labor and Delivery Video

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