The spread of monkeypox to humans can be prevented. The Centers for Disease Control and Prevention and the U.S. Food and Drug Administration (FDA) have prohibited the importation and sale of rodents from Africa, including Gambian giant pouched rats, dormice, striped mice, brush-tailed porcupines, tree squirrels, and rope squirrels.

mononucleosis An acute herpesvirus infection caused by the Epstein-Barr (EBV) virus and characterized by sore throat, fever, swollen lymph glands, and bruising. Transmitted in saliva, young people are most often infected. In childhood the disease is often mild; the older the patient, the more severe the symptoms are likely to be. infection confers permanent immunity.


The disease is usually transmitted by droplets of EB virus, but it is not highly contagious.


From four to six weeks after infection, classic mononucleosis begins gradually with symptoms of sore throat, fatigue, swollen lymph glands, and occasional bruising. Although the symptoms usually disappear after about a month, the virus remains dormant in the throat and blood for the rest of the child's life. Periodically, the virus can reactivate and be found in saliva, although it does not usually cause symptoms.

Sometimes the disease can start abruptly with a high fever and severe, swollen throat similar to a strep throat. Rarely, about 10 percent of patients have a third type, which causes a low persistent fever, nausea and vomiting, and stomach problems.

About half of all mononucleosis patients have an enlarged spleen, and a few have an enlarged liver or mild jaundice. A rash also can be seen in some cases.

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