what are viruses? give an example of them
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Answer:
A virus is a microscopic parasite that can infect living organisms and cause disease. It can make copies of itself inside another organism's cells. Viruses consist of nucleic acid and a protein coat. Usually the nucleic acid is RNA; sometimes it is DNA.
Explanation:
Examples of exanthematous viral diseases include:
●measles.
●rubella.
●chickenpox/shingles.
●roseola.
●smallpox.
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