More than 100 cases of "monkeypox" have been reported, yet the transmission chain is still unknown!

Since May 13, 2022, 12 countries and territories in non-monkeypox endemic regions have reported confirmed cases of monkeypox to WHO, according to the WHO's official website. As of May 21, 92 confirmed cases and 28 suspected cases of the disease had been recorded in a number of countries, including the UK, Portugal, and Spain. No related fatal cases have been reported.

A monkeypox outbreak was first reported in the United Kingdom, which was the first pandemic-free country to do so. This was followed by Israel, Switzerland, Germany and the Netherlands, which reported their first confirmed cases of monkeypox around May 21. WHO is concerned that there may be more cases of monkeypox in the future as surveillance efforts in non-infected countries continue to expand.

In addition, the BBC reported on May 22 that Israel, Switzerland and Austria have also reported confirmed cases of monkeypox in the past two days, bringing the number of countries reporting confirmed cases to 15 in this round.

In fact, monkeypox is a rare viral disease that is rarely found outside of Africa and is not readily transmitted from person to person. Monkeypox is transmitted through close contact with body fluids (e.g., saliva from a cough) and is "nothing" compared to the aerosol transmission of SARS-CoV-2.

Meanwhile, previous studies have found that the basic transmission number (R0) of monkeypox is in the range of 0.6-1.0, while the R0 of the SARS-CoV-2 variant, Omicron, is around 7. In general, R0

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