October 11, 2024

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Mpox outbreaks in Africa are a global health emergency, WHO declares

Mpox outbreaks in Africa are a global health emergency, WHO declares

The mpox outbreaks in Africa are a global emergency, with cases confirmed among children and adults in more than a dozen countries, the World Health Organization declared Wednesday.

The declaration comes after the Africa Centers for Disease Control and Prevention announced earlier this week that the outbreaks of mpox (formerly known as monkeypox) were a public health emergency, with more than 500 deaths, and called for international help to stop the virus’ spread.

“This is something that should concern us all. … The potential for further spread within Africa and beyond is very worrying,” said WHO director-general Tedros Adhanom Ghebreyesus. A global emergency is WHO’s highest level of alert but the designation does not necessarily mean a disease is particularly transmissible or lethal.

With a new form of the virus spreading and few vaccine doses available on the continent, the Africa CDC warned the virus might spill across international borders.

“We are now in a situation where (mpox) poses a risk to many more neighbors in and around central Africa,” said Salim Abdool Karim, a South African infectious diseases expert who chairs the Africa CDC emergency group. He said the new version of mpox spreading from Congo appears to have a death rate of about 3-4%.

Mpox has been detected in 13 countries this year with more than 96% of all cases and deaths are in Congo, the Africa CDC previously said.

Cases are up 160% and deaths are up 19% compared with the same period last year. So far, there have been more than 14,000 cases and 524 people have died.

Officials at the Africa CDC said nearly 70% of cases in Congo are in children younger than 15, who also accounted for 85% of deaths.

Where has the mpox outbreak spread?

Sweden reported its first case of the more infectious form of the virus on Thursday, just a day after the WHO declaration.

The patient recently sought health care in Stockholm, the Swedish public health agency said in a statement.

“In this case a person has been infected during a stay in the part of Africa where there is a major outbreak of (the more infectious mpox),” the agency said.

The person had been treated and given “rules of conduct,” said Magnus Gisslen, a state epidemiologist with the Swedish health agency.

“The fact that a patient with mpox is treated in the country does not affect the risk to the general population,” officials said, adding that experts estimate that risk to be “very low,” though occasional imported cases may continue to occur.

What is mpox?

Mpox, which was previously known as monkeypox, is in the same family of viruses that includes variola virus, which causes smallpox; vaccinia virus, used in the smallpox vaccine; and cowpox virus, according to the Centers for Disease Control and Prevention. It was discovered in a colony of monkeys in 1958 and its first human case was recorded in 1970 in the Democratic Republic of Congo, but has been reported in humans in other countries.

In 2022, the WHO declared mpox a global emergency after it spread to more than 70 countries, mostly affecting gay and bisexual men. In that outbreak, fewer than 1% of people died.

The current outbreak is a different strain than in 2022, Dr. Céline Gounder, a CBS News medical contributor and editor-at-large for public health at KFF Health News, explained on CBS “Mornings” Thursday.

“The strain is more mortal, so in other words, causes more percentage of deaths. It’s also more transmissible. It spreads more easily from person to person,” she said. 

New form of mpox symptoms

Earlier this year, scientists reported the emergence of a new form of mpox, which can kill up to 10% of people infected, in a Congolese mining town that they feared might spread more easily.  Mpox mostly spreads via close contact with infected people, including through sex. 

Unlike in previous mpox outbreaks, where lesions were mostly seen on the chest, hands and feet, the new form causes milder symptoms and lesions on the genitals. That makes it harder to spot, meaning people might also sicken others without knowing they’re infected.

“That last outbreak that we saw about two years ago was primarily being spread among men who have sex with men, bisexual men, transgender people. What we’re seeing this time is some 85% of the cases are among kids, and so it’s the poor hygiene that you see among little kids playing with each other, skin-to-skin contact — that’s how we’re seeing this being transmitted now,” Gounder said. 

She added that the current risk for infection in the United States is “very low.”

“We have yet to see any cases here, so I don’t think you should get too alarmed. If you see a child who looks like they have the chickenpox, it probably is the chickenpox. But that’s what the mpox rash looks like,” Gounder said. “The disease is more severe in that you have worse flu-like symptoms. You might also have swollen lymph nodes, but the rash is quite similar to the chickenpox.”

Can we stop the spread of mpox?

Western countries during the 2022 outbreak mostly shut down the spread of mpox with the help of vaccines and treatments, but very few of those have been available in Africa.

Michael Marks, a professor of medicine at the London School of Hygiene and Tropical Medicine, said that in the absence of mpox vaccines licensed in the West, officials could consider inoculating people against smallpox, a related disease. 

“We need a large supply of vaccine so that we can vaccinate populations most at risk,” he said, adding that would mean sex workers, children and adults living in outbreak regions.

Gounder said watching for symptoms, testing, and doing surveillance to spot the spread early can help curb the disease. 

“A lot of what we’ve been doing as the United States has been supporting the Democratic Republic of Congo, which is where the majority of these cases we’ve been supporting them to do that surveillance, to do that diagnostic testing, so you can isolate and prevent further spread, further transmission,” she said. 

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