Press Release

CHP investigates herpangina outbreak at child care centre in Mong Kok

18 May 2016

The Centre for Health Protection (CHP) of the Department of Health is today (May 18) investigating an outbreak of herpangina at a child care centre in Mong Kok, and again urged the public and institutions to maintain strict hand, personal and environmental hygiene amid the peak season.

The 21 affected children, 11 boys and 10 girls aged from 9 months to 2 years, have developed fever and oral ulcers since May 9. All sought medical attention and one of them was discharged after hospitalisation. All of the children are now in a stable condition.

The stool specimens of two children tested positive for enterovirus upon laboratory testing by the CHP's Public Health Laboratory Services Branch.

Officers of the CHP conducted a site visit and provided health advice to the management of the centre. The centre has been put under medical surveillance. Investigations are ongoing.

"Hand, foot and mouth disease (HFMD) is common in children and is usually caused by enteroviruses such as Coxsackieviruses and Enterovirus 71 (EV71). It is clinically characterised by maculopapular rash or vesicular lesions occurring on the palms, soles, and other parts of the body such as buttocks and thighs. Vesicular lesions and ulcers may also be found in the oral cavity. Sometimes there are patients mainly presenting with painful ulcers at the back of the mouth, namely herpangina, without rash on the hands or feet," a spokesman for the CHP explained.

To prevent HFMD, members of the public, and especially the management of institutions, should take heed of the following preventive measures:

• Maintain good air circulation;
• Wash hands before meals and after going to the toilet or handling diapers or other stool-soiled materials;
• Keep hands clean and wash hands properly, especially when they are dirtied by respiratory secretions, such as after sneezing;
• Cover the nose and mouth while sneezing or coughing and dispose of nasal and oral discharges properly;
• Clean children's toys and other objects thoroughly and frequently with diluted household bleach (by adding one part of household bleach containing 5.25 per cent sodium hypochlorite to 49 parts of water), followed by rinsing or wiping with clean water;
• Children who are ill should be kept out of school until their fever and rash have subsided and all the vesicles have dried and crusted;
• Avoid going to overcrowded places; and
• Parents should maintain close communication with schools to let them know the latest situation of the sick children.

The public may visit the CHP's page on HFMD and EV71 infection (This link will open in a new windowwww.chp.gov.hk/en/view_content/16354.html) for more information.