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The US Centers for Disease Control and Prevention announced on Saturday that the most severe form of mpox, the first known in the United States, has been confirmed in California. The agency says the risk of clade I mpox to the public is low.
The person diagnosed with clade I mpox had recently traveled from East Africa, where an outbreak of mpox is ongoing. The man was treated at a local medical facility and released, the CDC said. When the person is isolated at home and their symptoms improve. The state and CDC are working to identify and trace potential contacts.
Clade II mpox has been circulating in the United States since large outbreaks in 2022 and 2023. The recent outbreak in Africa is dominated by clade I, known to cause severe disease.
The subtype responsible for most of the ongoing spread, clade Ib, is relatively new. Travel-associated cases of mpox clade Ib have been reported in Germany, India, Kenya, Sweden, Thailand, Zimbabwe, and the United Kingdom. Some countries outside Africa have also reported locally transmitted cases.
“Recent travel-related cases of clade I mpox outside Africa all belong to subclade Ib; There have been no deaths linked to these cases and the data available for the episode have documented relatively mild disease courses, the CDC said Saturday.
“Historically, clade I mpox has caused more severe morbidity and mortality than clade II mpox; However, recent evidence suggests that infections from clade I mpox in the current outbreak may not be as clinically severe as in previous outbreaks. While case-fatality rates for clade I mpox outbreaks have been around 3%-11%, recent outbreaks have had case-fatality rates as low as about 1% when patients received good medical care and supportive clinical care. Death rates are expected to be much lower in countries with strong health care systems and treatment options, including the United States.
The World Health Organization reports that the number of smallpox cases in Africa is on the rise, mostly in the Democratic Republic of Congo, Burundi and Uganda. On November 22, the WHO is to convene an emergency committee meeting on mpox to recommend that the current outbreak remains a public health emergency of international concern.
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Empox, formerly known as monkeypox, is a viral disease related to the now extinct smallpox virus. It can be spread through close contact such as touching, kissing or sex, as well as through contaminated materials such as sheets, clothing and needles, according to the World Health Organization.
Early symptoms are similar to the flu – fever, chills, fatigue, headache and muscle weakness – and often include pain or itching. Rash With raised sores that itch and resolve over a period of weeks.
The CDC says people can protect themselves from mpox by avoiding contact with people who have symptoms and things like clothing, bedding, sex toys, and toothbrushes. Eligible individuals are advised to take two doses. mpox vaccine.