Washington: Adolescents and relatively healthy adults are especially at risk from the swine flu, which is associated with respiratory failure and a high mortality rate in serious cases, a latest study has said.The study, conducted during the first phase of infection between March 18 and June 1 in Mexico and April 16 through August 12 in Canada, also shows how emergency serviceswere sometimes submerged by the number of serious cases that needed to be treated simultaneously.
In "almost all cases," fever and respiratory symptoms were harbingers of disease, they added. "There was a relatively long period of illness prior to presentation to the hospital, followed by a short period of acute and severe respiratory deterioration."Bureau Report
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