This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Microbiology
In an epidemic, the 1st step is 
Select and explain. 
A. Verification of diagnosis, B. Isolation, C. Immunization, D. Notification
A: Verification of diagnosis
Answer: A: Verification of diagnosis 
Explanation: The steps in an epidemic investigation are :Verification of diagnosisConfirmation of the existence of the epidemicDefining the population at riskObtaining a map of the areaCounting the populationRapid search for all cases & their characteristicsMedical surveyEpidemiological case sheetSearching for more casesData analysisFormulation of hypothesisEvaluation of ecological factorsFuher investigation of the population at riskWriting the repo