The World Health Organization does not believe the monkeypox outbreak outside Africa will lead to a pandemic, an official said on Monday, adding it remains unclear if infected people who are not displaying symptoms can transmit the disease.

Axar.az reports that more than 300 suspected and confirmed cases of monkeypox - a usually mild illness that spreads through close contact and can cause flu-like symptoms and pus-filled skin lesions - have been reported in May, mostly in Europe.

Asked whether this monkeypox outbreak has the potential to grow into a pandemic, Rosamund Lewis, technical lead for monkeypox from the WHO Health Emergencies Programme said: "We don't know but we don't think so."

"At the moment, we are not concerned of a global pandemic," she said.

Once monkeypox has been contracted, the duration of the rash emerging and scabs falling off is recognised as the infectious period, but there is limited information on whether there is any spread of the virus by people who are not symptomatic, she added.

"We really don't actually yet know whether there's asymptomatic transmission of monkeypox - the indications in the past have been that this is not a major feature - but this remains to be determined, she said.