COLORADO SPRINGS, Dec. 5 (UPI) -- Colorado's influenza death toll among children has climbed to seven with reports a sixth-grader and a 20-month-old had died of complications from the flu.

DENVER, Nov. 26 (UPI) -- Colorado health officials say the flu season has struck the state early and hard with at least four children dead so far.

WASHINGTON, Nov. 13 (UPI) -- A growing number of parents across the United States are opting out of mandatory vaccination requirements for their children and health experts are concerned this could lead to outbreaks of deadly diseases such as measles, polio and whooping cough.

Tens of thousands of health-care workers will be among the first to receive smallpox vaccinations under the federal government's plan to protect the public agai