Monkeypox won't turn into pandemic, WHO says, despite many unknowns
The World Health Organisation's top monkeypox expert doesn't expect the hundreds of cases reported to date to turn into another pandemic, but acknowledges there are still many unknowns about the disease.
Those include how exactly it's spreading and whether the suspension of mass smallpox immunisation decades ago may somehow be speeding its transmission.
In a public session on Monday, the WHO's Dr Rosamund Lewis said it was unknown whether monkeypox was 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".
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World Health Organisation smallpox secretariat head Dr Rosamund Lewis addresses a press briefing in Geneva last week. UN Web TV
But she said it was critical to emphasise the vast majority of cases being seen in dozens of countries globally were in men who have sex with men, so 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 Lewis, the 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 anyone is at potential risk of the disease, regardless of their sexual orientation.
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The primary innoculation lesion for monkeypox infection. Supplied
Other experts have pointed out 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.
Monkeypox is known to spread when there is close physical contact with an infected person or their clothing or bedsheets.
To date, WHO said 23 countries that haven't previously had monkeypox have now reported more than 250 cases.
Lewis 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.
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This electron microscopic image depicted a monkeypox virion, obtained from a clinical sample associated with the 2003 prairie dog outbreak. (Photo: Cynthia S Goldsmith) AP
Last week, a top adviser to WHO said the outbreak in Europe, the United States, Israel, Australia and beyond was likely linked to sex at two recent raves in Spain and Belgium.
That marks a significant departure from the disease's typical pattern of spread in central and western Africa, where people are mainly infected by animals like wild rodents and primates, and epidemics haven't crossed borders.
Scientists haven't yet determined whether the monkeypox outbreak in rich countries can be traced to Africa, but the disease continues to sicken people on the continent.
On Monday, Nigerian authorities confirmed its first monkeypox death this year, in addition to six more cases. The WHO said there were typically thousands of cases reported from Nigeria and Congo every year.
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.
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Monkeypox is traditionally found only in Africa, or in people who have recently returned from the continent. AP
WHO's Lewis also said 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, vaccines for which are also protective against monkeypox, but has milder symptoms.
After smallpox was declared eradicated in 1980, countries suspended their mass immunisation programs, a move some experts believe may be helping monkeypox spread, since there is now little widespread immunity to related diseases.
Lewis said it would be "unfortunate" if monkeypox were able to "exploit the immunity gap" left by smallpox 40 years ago, saying there was still a window of opportunity to close down the outbreak so monkeypox would not become entrenched in new regions.
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