Vaccines help the body naturally and safely develop antibodies to combat a live virus, and can take between two weeks to a month to become effective.
It's flu season, and the Petersburg Medical Center is reporting several cases -- more than usual, including some who were immunized -- but all signs are pointing toward a vaccination that works.
"We have seen more cases than we normally see around this time of year," said Liz Bacom, the infection control manager with the medical center. "But it's not like this is an atypical year versus another. Every flu season is different.
"We are getting cases but they aren't super serious," Bacom said. "The vaccine is providing protection against something more serious."
Most flu cases at the hospital are...
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