A 28 y/o female recently lost her fetus pre-term. DNA analysis and microscopy sh
ID: 61610 • Letter: A
Question
A 28 y/o female recently lost her fetus pre-term. DNA analysis and microscopy showed that the stillbirth was caused by a microorganism. When the doctor asked about potential risk factors, the woman said she didn’t really get out much, but was constantly taking care of her ten cats in her apartment. (a) What was the microbe that caused the stillbirth? (b) Describe what happens when it infects rodents? (c) What is the hardy stage of the microbe that can survive in the environment called? (d) Why are indoor cats less worrisome than outdoor cats? A 28 y/o female recently lost her fetus pre-term. DNA analysis and microscopy showed that the stillbirth was caused by a microorganism. When the doctor asked about potential risk factors, the woman said she didn’t really get out much, but was constantly taking care of her ten cats in her apartment. (a) What was the microbe that caused the stillbirth? (b) Describe what happens when it infects rodents? (c) What is the hardy stage of the microbe that can survive in the environment called? (d) Why are indoor cats less worrisome than outdoor cats? A 28 y/o female recently lost her fetus pre-term. DNA analysis and microscopy showed that the stillbirth was caused by a microorganism. When the doctor asked about potential risk factors, the woman said she didn’t really get out much, but was constantly taking care of her ten cats in her apartment. (a) What was the microbe that caused the stillbirth? (b) Describe what happens when it infects rodents? (c) What is the hardy stage of the microbe that can survive in the environment called? (d) Why are indoor cats less worrisome than outdoor cats?Explanation / Answer
a). Toxoplasma gonadii is a microbe that infects cats and cause stillbirths in humans.
b). Rodents infected with toxoplasma exhibit an abnormal behavior of having no fear towards cats. They approach cats without fear. So, these infected rats and mice are easily preyed by cats, making them to be infected by the toxoplama.
c). The oocysts stage of the microbe that can survive in the environment.
d). Outdoor cats depend on preying cats for food, whereas indoor cats receive some domestic food. So, indoor cats less worrisome than outdoor cats.
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