Please give the genus and species for each question.
1. The colonies are typically large, gray-white opaque colonieson blood agar. Some strains are beta hemolytic. On MacConkey agarthe colonies appear red from fermentation of lactose in the medium.The bacterial cells are gram-negative straight rods. Thebiochemical reactions are indole positive, methyl red positive,voges proskauer negative and citrate negative. The microbe is(genus and species):
16. A 38-year-old man in Alabama developed bilateral paresthesiaand pain in his ears, headache, sore throat, and anorexia. Thesesymptoms persisted and later were accompanied by fever, difficultyswallowing, confusion, and tremor. He was admitted to the hospitalwith a temperature of 105 F, nuchal rigidity, confusion, agitation,and spasmodic tremors. Physical examination admission revealeddysarthria, dysphagia, pharyngeal paralysis, and drooling.Stimulation of the patient precipitated spasms with spontaneousflexion of all extremities. A lumbar puncture revealed no markedabnormalities. Seven days later, the patient had pharyngeal andlaryngeal spasms, subsequent cyanosis, and suffered a respiratoryarrest; he was resuscitated immediately. Reviewing the patient’shistory he had been bitten on the right ear by a bat four weeksprior to admission. The bat had escaped and the patient had soughtmedical care. Over the next few days, the patient lapsed into acoma. Neurologic examination revealed facial paralysis, generalizedhyporeflexia, and response to only deep pain. No other focalabnormalities were present. Initially the patient was treated withdiphenylhydantoin, diazepam, and chlorpromazine. Once the comaensued, the sedatives were discontinued. Proteinuria, hypothermiaand hypoxia subsequently developed. Despite intensive respiratorycare, antibiotics, postural drainage, use of bronchodilators, andvigorous suctioning, hypoxia persisted. The patient developed apneumothorax, had a cardiorespiratory arrest and died. The microbeis (genus and species):
30. a 7-year-old boy was brought to your office for evaluationof a sore throat and fever which he had for about 5 days. He is theson of parents who immigrated to the United States from Moscow 6months ago. He has not had much medical care in his life, and hisimmunization status is unknown. He is anxious, tachypneic, andappears sick. His temperature is 101.5 F and his voice is hoarse.His tonsils and pharynx are red and swollen with a grey membranecoating the tonsils, uvula and soft palate. He has lymphadenopathy.His lungs are clear. He is transferred to a local children’shospital with the presumptive diagnosis of:
