Three out of the seven specimens taken from patients of the Caritas Medical Centre outbreak have tested positive for parainfluenza, the Centre for Health Protection says. All seven were negative for other common respiratory pathogens. Laboratory tests on other specimens are proceeding.

As at 10am today, 19 boys and 13 girls aged four to 17 from the hospital´s Development Disability Unit have come down with the illness. Two still have fever. Enhanced infection control measures implemented in affected wards are effectively hindering the virus´ spread.

Parainfluenza virus is spread by respiratory secretions through contact with infected people or contaminated surfaces. Infections caused by the virus are common, especially in infants and small children. Severe illnesses, however, can occur among young children and patients with immunodeficiencies. The incubation period is generally one to seven days.

Infection can occur when tainted material contacts mucous membranes in the eyes, mouth or nose, and possibly through the inhalation of droplets generated by a sneeze or cough.