Mpox in China: New Mutated Strain Clade 1b Detected

A new mutated strain of the monkeypox virus, clade 1b, has been identified in China, following similar discoveries in France. This development comes amidst rising concerns over the HMPV infection in the country.

Details of the Outbreak

According to the China CDC, a cluster outbreak of the monkeypox virus subclade 1b was recently reported. The source of the infection was a foreign national with a history of living in the Democratic Republic of the Congo. Following the outbreak, regions like Zhejiang, Guangdong, Beijing, and Tianjin swiftly activated joint prevention and control mechanisms. These measures included epidemiological investigations, risk assessments, and case diagnoses.

Four related cases were identified among close contacts of the initial patient, all of whom contracted the virus through direct contact. The infected individuals exhibited symptoms such as rash and herpes, though their conditions were reported as mild. No infections have been detected among general contacts. The affected individuals and those at risk are currently undergoing medical treatment and health monitoring, and the outbreak has been effectively contained.

Mpox Symptoms

Patients displayed symptoms like rashes and herpes. Typical mpox symptoms include:

•Fever

•Chills

•Headache

•Muscle aches

•Swollen lymph nodes

Within a few days, a rash usually appears, starting as flat red spots that develop into fluid-filled blisters or pustules before crusting over and falling off. The rash often begins on the face, hands, or feet and may spread to other parts of the body, including the genitals. Mpox symptoms generally last 2–4 weeks and are typically mild, though severe cases can occur.

Preventive Measures in China

In response to the outbreak, Chinese authorities have urged citizens to report their health status to customs if returning from countries or regions with active mpox cases. Individuals who have been in contact with mpox patients or exhibit symptoms are also required to report their condition.

The China CDC issued a notice via its WeChat account advising people to:

•Avoid close contact with mpox patients or individuals showing suspicious symptoms.

•Refrain from contact with rodents and primates.

These measures aim to minimize the risk of further spread and protect public health.