pls explain what is second generation vaccine ??
which of the following are second generation vaccine ?
A) hepatatis B virus vaccine
B) herpes virus vaccine
C) salk polio vaccine
D) both a and b
Answers
1804
Smallpox vaccine sourced from England
1917
Smallpox vaccine produced in Australia
1917
Tetanus antitoxin introduced for the armed forces
1924
Diphtheria toxin–antitoxin introduced
1925
Tetanus toxoid vaccine introduced
1925
Pertussis toxoid vaccine used in case contacts and epidemics
1927
Diphtheria toxoid vaccine introduced
1932
Community immunisation for the public began
1945
June
Tetanus toxoid vaccine available for civilians after World War II
1953
Diphtheria–tetanus–pertussis (DTP) vaccine introduced (triple antigen)
1956
May
Inactivated polio vaccine (IPV, Salk) introduced
1966
September
Oral polio vaccine (OPV, Sabin) introduced
1969
Measles vaccine introduced
1971
February
Rubella vaccine introduced
1980
Smallpox vaccination ceased. Plz rate me as star.
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