Question

Please give genus and species for each answer.

81. A 30-year old male enjoyed a meal of raw oysters. Twenty-four hours later he became ill, with sudden onset of vomiting, diarrhea and headache. The most likely cause of his gastroenteritis is

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82. This virus is the most important cause of gastroenteritis in infants and young children. It causes infections that are often severe and may be life threatening, especially in infants.

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83. A microbiologist was performing a necropsy in a laminar flow hood on a blue jay submitted as part of a state’s arbovirus surveillance program. He lacerated his thumb while using a scalpel to remove the bird’s brain. Four days later, he developed headache, myalgia, and malaise followed by chills, sweats, and lymph node swelling. Two days later a rash began on his face and spread to the trunk, arms and legs persisting for about 3 days. He sought medical care and reported a history of dengue fever and vaccinations with yellow fever and Japanese B encephalitis vaccines. A serum sample taken the day of the injury contained anti-flavivirus Ig G antibody by ELISA. A serum sample collected 13 days after onset of illness showed an increased titer of anti-flavivirus Ig G antibody The physician could conclude that the most likely cause of the microbiologist’s illness was

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84. A 65-year old man develops fever, headache, malaise, myalgia, and cough. It is early in the winter respiratory virus season, and the patient’s physician does not know what viruses are present in the community. What virus is the cause of severe acute respiratory syndrome?

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85. A 25-year-old man is a resident of a small town near London. He likes to eat beefsteak. He develops a severe progressive neurologic disease characterized by psychiatric symptoms, cerebellar signs, and dementia.

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86. A 40-year old woman with many lifetime sexual partners is diagnosed with cervical cancer. This cancer is common worldwide and has a sexually transmitted viral etiology. The causative agent of human cervical cancer is

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87. A 50-year-old male went to the ER because of meningitis symptoms. He complained of headaches and stiff neck. His hobby is racing and raising pigeons. He is HIV positive and routinely takes his anti-retrovial drugs. A lumbar puncture is formed and budding encapsulated yeast are identified after an India ink preparation was done.

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88. A 30-year-old florist presents at her physician’s office complaining of a ulcerated lesion on her left hand after being pricked by a rose thorn. The doctor notices abcesses running along the lymphatic channels. This dimorphic fungi is

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89. A 25-year-old spelunker who lives in Mississippi has a pulmonary infection that is getting worse. His Xray shows an infiltrate or darkened left lobe. Sputum showed pear shaped macroconidia and Staining of colonies showed spores resembling sunflowers in bloom’

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90. A 30-year-old immigrant from Central America presents with a mild respiratory infection. He only has mild changes in his lungs and gave a positive skin test. Sputum was stained and thick walled spherical yeast resembling a mariner’s wheel or a boatman’s wheel were seen.

Answer 1

81. eating raw oysters will cause disease as the oyster eat constantly drawing water into and trapping the materials in the water. This include harmful bacterias and viruses, which get concentrated in the body of these oysters so that by eating this oysters as raw and undercooked human get sick. Most commonly seen bacteria in the coastal area where oysters are seen is Vibrio parahaemolyticus.These cause slight illness, diarrhoea and vomiting in humans. So the reason for the sick can be this bacteria

82. Rotavirus gastroenteritis is most common reason of gastroenteritis in case of infants and young children. these viruses cause increased bowel movement, thereby causing stomach and bowel inflammation. thus causing severe diarrhoea, abdominal pain and even become fatal.

83.Yellow fever, dengue fever and japanese encephalities are caused by the viruses belonging to the family of flavivirus. The natural host for dengue and yellow fever are human and primates respectively, while in case of Japanese B encephalities natural host is birds. As it is said that he was doing experiment in which while he was trying to remove bird's brain he got a lacerated wound. Through this wound virus can be passed to his body and cause disease. The person affected with japanese B encephalities show fever, headache and vomiting during intial periods and there can be change in the mental status of the person. Also he has a history of vaccination against japanese encephalities so that there wil be immediate production of antibody in the body with encounter with virus and antibody level further increase in the body so that body try to remove the virus. So the cause of his disease is caused by Japanese encephalitis virus , which is a flavivirus.

84. Orthomyxovirus A, it is a influenza virus. Which cause acute respiratory problems, myalgia, malaise, cough and fever. Normally it won't affect musch in a person, but with advancing age, the immunity gets lowered, causing the disease. Mostly this pandemic RNA virus is found during winter seasons.

84.