A doctor administers a
typhoid fever
vaccination at a rural school in
San Augustine County, Texas, April 1943. Vaccination is the administration of
antigenic material (the
vaccine) to produce
immunity to a disease. It is considered to be the most effective and cost-effective method of preventing
infectious diseases.Photo credit:
John Vachon,
FSA
A doctor administers a
typhoid fever
vaccination at a rural school in
San Augustine County, Texas, April 1943. Vaccination is the administration of
antigenic material (the
vaccine) to produce
immunity to a disease. It is considered to be the most effective and cost-effective method of preventing
infectious diseases.Photo credit:
John Vachon,
FSA