To the Editor:—
The Public Health Service predicted an influenza outbreak (201, July 24, 1967, adv p 37). They recommend two injections of vaccine, the first in October and the second in December.Those of us who remember the great epidemic of 1918 know that it started in the lovely weather of September and was raging by October.Active immunity from the first injection reaches a peak in six weeks, but reinforcement from the second is effective more quickly. An October start is entirely too late. I propose to vaccinate my patients first in August and finish by the end of September. Then they will be at their peak of immunity in time for it to be effective in the fall epidemic.