Health officials said yesterday that they are investigating a fourth case of measles at Children's Hospital, where the infection might have occurred. A news release from the state Department of Health did not offer any information about the age or whereabouts of the latest infected person.
The department announced Tuesday that two Westmoreland County preschoolers and their 33-year-old father had been diagnosed with measles.
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Measles is a highly communicable rash illness caused by a virus transmitted by direct contact with infectious droplets or, less commonly, by airborne spread.
Symptoms include a runny nose, watery eyes, cough and a high fever.
The incubation period is seven to 18 days, but a person is contagious for four days prior to the appearance of the rash and remains contagious four days after the rash appears. The rash will usually last four to seven days.
http://www.post-gazette.com/pg/09094/960646-53.stm