目前我国普遍使用的伤寒疫苗是() ["Ty21a减毒活菌苗","全菌灭活疫苗","类毒素疫苗","Vi疫苗","三联疫苗"]
关于人类沙门菌感染肠炎型(食物中毒),叙述不正确的是() ["是最常见的沙门菌感染,由摄入大量鼠伤寒沙门菌、猪霍乱沙门菌等污染的食物引起","主要症状为发热、恶心、呕吐、腹痛、腹泻,一般3~5天内较快恢复","潜伏期6~24小时","常为集体性食物中毒","病后多见带菌者"]
能在SS琼脂上生长的大肠埃希菌菌落的颜色是() ["浅红","深红","黄","无","深灰"]
不属于肠杆菌科的细菌是() ["伤寒沙门菌","空肠弯曲菌","奇异变形杆菌","痢疾志贺菌","枸橼酸杆菌"]
根据O抗原,志贺菌属分为多个群,其中A群是() ["痢疾志贺菌","福氏志贺菌","鲍氏志贺菌","宋内志贺菌","痢疾志贺菌"]
简述口腔扁平苔藓临床表现。