“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.
“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.”
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.
“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.”
What are the initial symptoms of monkeypox?
“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.
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.
How is monkeypox spread?
Close contact with an infected individual is required for the spread of the monkeypox virus, experts say.
Infection can develop after exposure to “broken skin, mucous membranes, respiratory droplets, infected body fluids or even contact with contaminated linen,” Neil Mabbott, personal chair in immunopathology at the veterinary school of the University of Edinburgh in Scotland, said in a statement.
“When the lesions have healed, the scabs (which might carry infectious virus) can be shed as dust, which could be inhaled,” said Dr. Michael Skinner, who is on the faculty of medicine in the department of infectious disease at Imperial College London, in a statement.
“Smallpox patients became contagious as soon as they developed sores spread the virus though droplets with coughing or sneezing. They remained contagious until their lesions resolved,” said Dr. Paritosh Prasad, director of the Highly Infectious Disease Unit at the University of Rochester Medical Center in New York.
However, based on available historical information, monkeypox appears to be less contagious than smallpox, Prasad said.
“Monkeypox can be a serious infection, with mortality rates from this type of monkeypox virus having been around 1% in other outbreaks. These are often in lower-income settings with limited access to health care,” said Michael Head, senior research fellow in global health at the University of Southampton in the UK. There are no reported deaths from the current outbreak.
However, in the developed world, “it would be very unusual to see anything more than a handful of cases in any outbreak, and we won’t be seeing (Covid)-style levels of transmission,” Head said in a statement.
Common household disinfectants can kill the monkeypox virus, according to the CDC.
How is monkeypox treated?
There are no specific drugs available to treat the symptoms of monkeypox, so “treatment is generally supportive,” Jimmy Whitworth, professor of international public health at the London School of Hygiene & Tropical Medicine, said in a statement.
“However, a vaccine is available that can be given to prevent the development of disease,” Whitworth said.
In the US, a two-dose vaccine called Jynneos is currently licensed to prevent monkeypox and can also be used for smallpox. The vaccine has been stockpiled by the US government in case of a resurgence of the eradicated disease.
“Right now, we have over 1,000 doses of that available and we expect that level to ramp up very quickly in the coming weeks as the company provides more doses to us,” Dr. Jennifer McQuiston, deputy director of the Division of High Consequence Pathogens and Pathology within the CDC’s National Center for Emerging and Zoonotic Infectious Diseases, told reporters during a call Monday.
“We are hoping to maximize vaccine distribution to those that we know would benefit from it,” McQuiston said. “Those are people who’ve had contact with a known monkeypox patients, health care workers, very close personal contact, and those in particular who might be at high risk for severe disease.”
Where did monkeypox originate?
However, the main disease carrier of monkeypox is still unknown, although “African rodents are suspected to play a part in transmission,” the agency said.
The first known case of monkeypox in people was “recorded in 1970 in the Democratic Republic of Congo during a period of intensified effort to eliminate smallpox,” the CDC said. Since then, most cases have been concentrated in 11 African countries — with several outbreaks in the US and Europe related to travel or importation from endemic countries.
“The pets were infected after being housed near imported small mammals from Ghana,” the CDC said. “This was the first time that human monkeypox was reported outside of Africa.”
CNN’s Jacqueline Howard, Nadia Kounang, Jen Christensen, Michael Nedelman, Paula Newton, John Bonifield, Naomi Thomas, Alex Hardie and Benjamin Brown contributed to this report.
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