The company has warned that more monkeypox will be identified.
The BBC reported this information in a report.
Monkeypox has been identified in the United States, United Kingdom, Sweden, Italy, Spain, Portugal, Canada, France, Belgium, and Australia.
The first monkeypox in Europe was identified in the United Kingdom.
The WHO said it was investigating the identification of 50 more suspected monkeypox.
However, the agency did not say which countries the suspected monkeypox patients were from.
Although thousands of monkeypox cases have been reported in West and Central Africa in recent years, the disease has not been reported in Europe and North America.