Develop Four-in-one Vaccine

[Black and white photograph of two men in lab coats.  The one on the left is holding up a single vial between his thumb and index finger for the camera, the one on the right is holding 4 vials with different label in an open palm.] -- STAR Photo by Federal Newsphoto

Develop Four-in-one Vaccine

Researchers at Connaught Medical Research Laboratories have succeeded in adding polio vaccine to the standard diphtheria, tetanus and whooping cough serum. Dr. D.R. McLeod and Dr. R. J. Wilson show 4-in-1 product.