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The animal wants to eat, but food remains within the mouth, with drooling saliva, because of paralysis of the masticatory muscles. Following nervous location of the lesions, the signs may be different from one sick animal to another. In adult cattle, the course of the disease is one to two weeks, but in calves, it is more acute. [7]
Sickness behavior in its different aspects causes an animal to limit its movement; the metabolic energy not expended in activity is diverted to the fever responses, which involves raising body temperature. [1] This also limits an animal's exposure to predators while it is cognitively and physically impaired. [1]
The disease is usually more severe in adults than in children. [9] Chickenpox is an airborne disease which easily spreads via human-to-human transmission, typically through the coughs and sneezes of an infected person. [5] The incubation period is 10–21 days, after which the characteristic rash appears. [2]
Rapid treatment may kill adult worms and thereby stop further worsening of symptoms. [4] Both medications are considered safe but have been associated with side effects such as bone marrow suppression. [4] Their use during pregnancy or in children under the age of 2 years is poorly studied but appears to be safe. [4]
Adults who have developed immunities might still carry certain organisms without exhibiting symptoms. [17] Thus, adults can become natural reservoirs of certain diseases. [17] While some agents (such as Shigella) only occur in primates, others (such as Giardia) may occur in a wide variety of animals. [17]
Most people survive measles, though in some cases, complications may occur. About 1 in 4 individuals will be hospitalized and 1–2 in 1,000 will die. Complications are more likely in children under age 5 and adults over age 20. [88] Pneumonia is the most common fatal complication of measles infection and accounts for 56–86% of measles ...
B. ceti is believed to transfer from animal to animal through sexual intercourse, maternal feeding, aborted fetuses, placental issues, from mother to fetus, or through fish reservoirs. Brucellosis is a reproductive disease, so has an extreme negative impact on the population dynamics of a species.
Children are especially susceptible, and the toxins have been reported to transfer readily via breastfeeding, even when the mother experiences no illness. [1] [2] Effects on the digestive system include nausea, vomiting, diarrhea, abdominal pain, dysphagia, tongue abnormalities and a firm, nontender liver.