The Centre for Health Protection (CHP) of the Department of Health (DH) announced today (October 28) that it is investigating a confirmed Mpox (also known as Monkeypox) case. There has been a significant increase in Mpox cases in Hong Kong during August and September this year. As the CHP has swiftly adopted a multipronged approach to curb the spread of Mpox, the number of new cases recorded in October decreased substantially. The CHP will continue to put in place various targeted prevention and control measures to safeguard public health.
Case details
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The case involves a 41-year-old man who developed lymphadenopathy since October 21, and rash over his genital area and upper limbs since October 24. He sought medical attention at a social hygiene service clinic under the DH on October 26, and was subsequently arranged by the CHP to receive isolation treatment at Princess Margaret Hospital. Upon laboratory testing by the CHP's Public Health Laboratory Services Branch, his clinical specimen tested positive for the Monkeypox virus. The patient is currently in stable condition.
According to the information provided by the patient, he had high-risk sexual exposure in Hong Kong and outside Hong Kong during the incubation period. The source of infection is still under investigation. The CHP is continuing its epidemiological investigation of the case, and will report it to the World Health Organization.
Latest situation of Mpox cases
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Since 2022, Hong Kong has recorded 117 Mpox cases (91 local cases, 25 imported cases, one case with source of infection under investigation). All patients are males. Epidemiological investigations revealed that among the 24 cases recorded since August, all patients reported having engaged in high-risk sexual activities during the incubation period, including having sex with male strangers or multiple partners, and having sex without a condom. Most of them have not received the Mpox vaccinations.
Among the local cases recorded since August, patients commonly used specific dating apps to find casual male sexual partners. After testing positive, some patients were unable to contact their newly met sexual partners, which hindered the CHP's ability to conduct effective contact tracing and implement corresponding prevention and control measures. In view of this, the CHP has increased its outreach on social media platforms to promote Mpox prevention and vaccination, and has collaborated with the operators of relevant dating apps to regularly push information about Mpox prevention and vaccination to all users in Hong Kong.
The CHP urges individuals who have engaged in high-risk sexual contact, particularly with male strangers, to remain vigilant and take appropriate personal protective measures, including receiving the Mpox vaccination and avoiding high-risk sexual contact, so as to lower the risk of infection. Members of the public should retain their sexual partners' contact information to facilitate contact tracing when necessary.
Strengthening prevention
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Mpox vaccine can prevent infection and severe disease. Since late September, the CHP had set up an additional Mpox vaccination centre at the CHP Building, in addition to regular vaccination venues established by the Government. The CHP had also collaborated with relevant non-governmental organisations to provide outreach vaccination services, providing convenience and incentives to encourage individuals with high-risk contacts to get vaccinated as soon as possible. Over the past month, 660 high-risk individuals have received the Mpox vaccine at the regular and additional vaccination venues.
Vaccination provides a highly effective protective barrier. Studies show that receiving two doses of the Mpox vaccine reduces the risk of infection by 82 per cent, which significantly lowers the risk of transmission to sexual partners, and protects both the vaccinated individual and others. Local data also show that vaccinated patients are 87 per cent less likely to experience viral spread to other parts of the body.
The CHP's Mpox hotline (2125 2373) will continue to provide health assessments and advice to high-risk individuals. The hotline will arrange individuals in need to get vaccinated inside the CHP. The hotline operates daily from 9am to 6pm.
More information on Mpox
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Mpox is not transmitted through respiratory droplets or aerosols in general, and transmission would not occur through social contact. The CHP reminds the public, especially those at higher risk of exposure, to take precautions and avoid close physical contact with persons or animals suspected of being infected. They should seek medical attention as soon as possible if they experience relevant symptoms, including rash, fever, chills, swollen lymph nodes, exhaustion, muscle pain, and severe headaches. They should not engage in activities with others that may involve contact with skin rash or body fluids.
The DH has been providing Mpox vaccination services for high-risk groups, including individuals with high-risk sexual practices (such as having multiple sexual partners), sex workers, or having a history of sexually transmitted infection within the past 12 months.
For more details, please visit the CHP's webpages on Mpox and the Mpox Vaccination Programme.