Que. | OPV was discovered in |
- A. 1944
- B. 1957
- C. 1952
- D. 1946
Right Answer is :
✓ B. 1957
Views 👍 :969 Share : 
✒ To discuss this topic Comment
✕ Cancel
❖ Related Questions
➣ Goals of national health policy 2002 are ... ➣ The no. of all cases (old + ... ➣ Most common mode of transmission of diphtheria ... ➣ The aldehyde test of napier is used ... ➣ Primary prevention of TB includes ... ➣ Second phase of pulse polio immunization programme ... ➣ Community health nurse provides following type of ... ➣ Lab investigation done to diagnose HIV is ... ➣ An agent which kills the infectious agent ... ➣ BCG vaccine is given always in upper ...