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Sample of malaria vaccine SPf66
1988
1988
1955-1975
1986
1981
1981
1981
1880-1930
2004-2005
before 1978
1923
2004-2005
1954-1971
1941-1943
1978
1970-1981
circa 1932
1994
1970-1981
1970-1981
1970-1981
2007
1871-1885
1970-1981
1950-1970
1981-1985
1994
2005-2012
1916-1940
1986-1987
1956
1984-1986
1964-1966
1970-1981
1924-1925
1916
1970-1981
2004-2005
1880-1900
1907
before 1978
1925-1930
1869-1875
circa 2007
1983
1982
1888-1927
1981
1880-1941
1840-1900