disease after
vaccination.

Who should not be Vaccinated.--Unless exposure to smallpox is believed to
have taken place or likely to take place, teething children, pregnant
women, persons suffering from measles, scarlet fever, erysipelas, or
susceptible to and recently exposed to one of these diseases, persons
suffering with skin diseases or eruption, and in general feeble persons
not in good health, should not be vaccinated. In all cases in which there
is any doubt as to the propriety of vaccinating or postponing vaccination
the judgment of a good physician should be taken. The restriction, as to
vaccinating teething children makes it important that children should be
vaccinated before the teething process has begun, because smallpox is very
much more dangerous than vaccination. Smallpox is exceedingly dangerous to
pregnant women.

When should a person be Vaccinated.--The sooner the better as a rule, and
especially whenever there is much liability of exposure to smallpox.
Children should be vaccinated before they are four months old; those who
have never been vaccinated, should, except teething children, be
vaccinated at once. Because the vaccination often loses its protective
power after a time, those who have been vaccinated but once or twice
should, in order to test and to increase the protective power of the
former vaccination, be vaccinated again, and as often as the vaccination
can be made to work. In general, to insure full protection from smallpox,
one should be vaccinated as often as every five years. It has been found
that of those who have smallpox the proportion of deaths is very much less
among those who have three or four good vaccination scars than among those
who have but one scar.

Vaccination after exposure to Smallpox.--Vaccination as late as the second
day after known exposure to smallpox is believed to have prevented the
smallpox; vaccination the third day after exposure has rendered the
disease much milder than usual, and in a case in Iowa, vaccination on the
seventh or eighth day after exposure to smallpox ran a partial course and
was believed to have modified the attack of smallpox, which, however, it
did not wholly prevent. A recent case in Michigan was vaccinated three
days after exposure, as were also the wife, mother, and two children, both
under five years of age; all vaccinated again six days after the exposure.
The health officer reported as follows: "The results were gratifying.
Durin