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Wales Online
Wales Online
National
Maria Cheng (AP) & Steven Smith

WHO expert on what to expect next in monkeypox outbreak

The World Health Organisation's top monkeypox expert said she does not expect the hundreds of cases reported to date to turn into another pandemic, but acknowledged there are still many unknowns about the disease. In a public session on Monday, WHO's Dr Rosamund Lewis said it was critical to emphasise that the vast majority of cases being seen in dozens of countries globally are in gay, bisexual or men who have sex with men, so that scientists can further study the issue and for those at risk to be careful.

"It's very important to describe this because it appears to be an increase in a mode of transmission that may have been under-recognised in the past," said Dr Lewis, WHO's technical lead on monkeypox.

"At the moment, we are not concerned about a global pandemic," she said. "We are concerned that individuals may acquire this infection through high-risk exposure if they don't have the information they need to protect themselves."

She warned that anyone is at potential risk of the disease, regardless of their sexual orientation. Other experts have pointed out that it may be accidental that the disease was first picked up in gay and bisexual men, saying it could quickly spill over into other groups if it is not curbed. To date, WHO said 23 countries that have not previously had monkeypox have now reported more than 250 cases.

Dr Lewis said it was unknown whether monkeypox is being transmitted by sex or just the close contact between people engaging in sexual activity and described the threat to the general population as "low". Monkeypox is known to spread when there is close physical contact with an infected person or their clothing or bedsheets.

She also warned that among the current cases, there was a higher proportion of people with fewer lesions that are more concentrated in the genital region and sometimes nearly impossible to see.

"You may have these lesions for two to four weeks (and) they may not be visible to others, but you may still be infectious," she said.

Most monkeypox patients experience only fever, body aches, chills and fatigue. People with more serious illness may develop a rash and lesions on the face and hands that can spread to other parts of the body. No deaths have been reported in the current outbreak beyond Africa. WHO's Dr Lewis also said that while previous cases of monkeypox in central and western Africa have been relatively contained, it was not clear if people could spread monkeypox without symptoms or if the disease might be airborne, like measles or Covid-19.

Monkeypox is related to smallpox, but has milder symptoms. After smallpox was declared eradicated in 1980, countries suspended their mass immunisation programs, a move that some experts believe may be helping monkeypox spread, since there is now little widespread immunity to related diseases; smallpox vaccines are also protective against monkeypox.

Dr Lewis said it would be "unfortunate" if monkeypox were able to "exploit the immunity gap" left by smallpox 40 years ago, saying that there was still a window of opportunity to close down the outbreak so that monkeypox would not become entrenched in new regions.

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