What is monkeypox, its symptoms

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This electron microscopic (EM) image depicted a monkeypox virion, obtained from a clinical sample associated with the 2003 prairie dog outbreak. It was a thin section image from of a human skin sample. On the left were mature, oval-shaped virus particles, and on the right were the crescents, and spherical particles of immature virions. High Resolution: Click here for hi-resolution image (5.21 MB) Content Providers(s): CDC/ Cynthia S. Goldsmith Creation Date: 2003 Photo Credit: Cynthia S. Goldsmith, Russell Regnery

An extremely rare disease called monkeypox, a much less severe cousin of smallpox, is spreading around the world. More than 250 cases have been reported in at least 16 countries, according to the World Health Organization. Experts say it is spread by close and prolonged contact with an infected individual.

“The countries that are reporting monkeypox now are countries that do not normally have outbreaks of monkeypox,” Rosamund Lewis, head of the smallpox secretariat, WHO Emergencies programme, said Tuesday during a news briefing at the United Nations in Geneva.

Overall, monkeypox risk is moderate for people with multiple sexual partners and low for the broader population, according to a rapid risk assessment report published Monday by the European Centre for Disease Prevention and Control.


However, monkeypox is not considered a sexually-transmitted disease.

Monkeypox is endemic near tropical rainforests in central and west Africa, but it has increasingly been seen near urban areas, according to WHO.

“This is an emerging disease. It has been emerging for the last 20 to 30 years, (so) it’s not unknown, it’s very well described,” Lewis told reporters. “The risk for the general public, therefore, appears to be low, because we know that the main modes of transmission have been as described in the past.”

In the United States, the first case of monkeypox in 2022 was diagnosed in a patient hospitalized in Massachusetts who had recently traveled to Canada in private transportation. In 2021, two people traveling from Nigeria to the US were diagnosed with the disease, according to the Centers for Disease Control and Prevention, according to CNN.

Cases in other parts of the world than Africa are typically linked to international travel or imported animals infected with the pox, the CDC said.

Several cases of monkeypox reported in the UK have been among people who had no known travel or contact with others, but there is no cause for alarm, US Surgeon General Dr. Vivek Murthy said Thursday on CNN’s “New Day.”

“At this time, we don’t want people to worry,” Murthy said. “These numbers are still small; we want (people) to be aware of (the) symptoms, and if they have any concerns to reach out to their doctor.”

There is an incubation period of some seven to 14 days, the CDC said. Initial symptoms are typically flu-like, such as fever, chills, exhaustion, headache and muscle weakness, followed by swelling in the lymph nodes, which help the body fight infection and disease.

“A feature that distinguishes infection with monkeypox from that of smallpox is the development of swollen lymph nodes,” the CDC said.

Next comes a widespread rash on the face and body, including inside the mouth and on the palms of the hands and soles of the feet.

The painful, raised poxes are pearly and fluid-filled, often surrounded by red circles. The lesions finally scab over and resolve over a period of two to three weeks, the CDC said.

In the current outbreak, there appear to be a higher number of cases causing rash in the groin area of patients, according to the WHO and CDC.

“In some cases, during the early stages of illness, the rash has been mostly in the genital and perianal area,” Dr. John Brooks, chief medical officer for the CDC’s Division of HIV/AIDS Prevention said Monday in a news briefing.

“In some cases, it has produced anal or genital lesions that look like other diseases like herpes or chickenpox or syphilis,” he said.

A “notable fraction of cases” in the current outbreak have been seen among gay and bisexual men, “but by no means is the current risk of exposure to monkeypox exclusively to the gay and bisexual community in the US. Anyone, anyone, can develop [and] spread monkeypox,” Brooks said.

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