Adult fleas can cause medical problems including flea allergy dermatitis (FAD), tapeworms, secondary skin irritations and, in extreme cases, anemia. Some people may have a severe reaction, such as a general rash or inflammation, which can result in secondary infections caused by scratching the irritated skin area. Fleas may transmit bubonic plague from rodent to rodent and from rodent to humans. Tapeworms normally infest dogs and cats but can appear in children if parts of infested fleas are accidentally consumed.
Fleas have been hated by humans for a long time. The role of pests and disease in human history is often neglected and the plague is considered to have caused more human grief and fear than any other single cause and to have changed the course of history more than any other force. Three main periods of... [continues]
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