TABLE 3. Prenatal influenza and adult schizophrenia
Study Sample Findingsa
Mednick et al. (50) pregnancies coincident with Helsinki 1957

A-2 epidemic

{ewc MVIMG, MVIMAGE,!uparrow.BMP} in schizophrenia in second-trimester cohort,

especially at 6th months' gestation

Kendell and Kemp

(42)

pregnancies coincident with Scottish

1918, 1991, and 1957 A-2 epidemics

{ewc MVIMG, MVIMAGE,!uparrow.BMP} in Edinburgh samples for 1957, second

trimester. No {ewc MVIMG, MVIMAGE,!uparrow.BMP} association in entire sample

Torrey et al. (65) 43,814 schizophrenic births between

1950-1959 in USA

No {ewc MVIMG, MVIMAGE,!uparrow.BMP} in association with 1957 A-2
Barr et al. (7) Danish schizophrenic samples born

between 1911 and 1950 ( N = 7239 )

{ewc MVIMG, MVIMAGE,!uparrow.BMP} in schizophrenia in 6 to 7-month gestational

group coincident with high incidence of

influenza compared with group coincident

with low incidence

O'Callaghan et al.

(53)

339 schizophrenic patients born around

English 1957 A-2 epidemic

abnormal distribution of schizophrenia births

in index year in women only, appearance

of {ewc MVIMG, MVIMAGE,!uparrow.BMP} in risk in 5th gestational month

Sham et al. (59) British Hospital First Admission between

1970-1979 with schizophrenia, N not

specified

weak statistical association between

frequency patern of influenza deaths

between 1939 and 1960 and second

trimester of schizophrenic births

Crow and Done

(21)

1620 pregnancies with history of 1957 A-

2 influenza infection in Great Britain

no increased risk of schizophrenia

published 2000