Bautista NB, White ME, Gacis FE, Dayrit MM, Pongol EZ
Between June 2-23, 1989, 150 typhoid cases were reported from Pilar Village subdivision (population 11,199). A cross-sectional survey was conducted to determine the extent of the epidemic, the source of the outbreak, its etiology and to determine effective control measures. A pre-tested self-adminis . . .