Monkeypox cases under investigation in Canada as outbreak spreads in Europe, U.S.

Monkeypox cases under investigation in Canada as outbreak spreads in Europe, U.S.
Monkeypox cases under investigation in Canada as outbreak spreads in Europe, U.S.

Arabnews24.ca:Wednesday 18 May 2022 05:58 PM: Health officials in Quebec are investigating more than a dozen cases of suspected monkeypox in Canada, after U.S. and European health officials confirmed rising cases of the rare infectious disease — suggesting a wider outbreak may be happening globally.

Radio-Canada reported Wednesday that Montreal public health officials are investigating up to 13 cases flagged by doctors in the city, following diagnoses made in three clinics specializing in sexually transmitted and blood-borne infections. Laboratory confirmation of the cases are in progress and an announcement is expected in the coming days. 

The U.S. confirmed its first case of monkeypox in a man who recently travelled to Canada, after European health officials confirmed more than two dozen cases of the rare infectious disease this week, suggesting a wider outbreak may be happening globally.

Man in U.S. case travelled to Canada 

The Massachusetts Department of Public Health confirmed a single case of monkeypox infection on Wednesday in an adult man who had been to Canada and returned to the state — but did not specifically say which province the man had travelled to. https://twitter.com/HelenBranswell/status/1527027049797406727 reported Wednesday that the man had travelled to Quebec. 

The Public Health Agency of Canada (PHAC) said in a statement to CBC News Wednesday that there were no cases of monkeypox reported to the agency yet. 

"PHAC is aware of and closely monitoring the current situation concerning the reporting of monkeypox cases in Europe. No cases have been reported to PHAC at this time," a spokesperson said in an email. 

"PHAC has alerted provincial and territorial public health authorities and laboratory partners across Canada to be alert for and investigate any potential cases. As the situation evolves we will continue to keep Canadians informed." 

The agency said it was also "collaborating closely" with international partners including the World Health Organization (WHO), the U.S. Centers for Disease Control (CDC) and Prevention and the U.K. Health Security Agency (UKHSA) on the investigation. 

Britain reported its first case of monkeypox on May 7 and has found nine in total since then, while Portuguese health officials confirmed five cases Wednesday and Spain is investigating more than 20 possible infections. 

"This, once again, highlights the threat of viruses like this," Dr. Maria Van Kerkhove, an infectious diseases epidemiologist and technical lead on COVID-19 and emerging diseases with the WHO, said during a press conference this week. 

"We really need to better understand the extent of monkeypox in endemic countries like in DRC and in Nigeria, Central African Republic and others to really understand how much is circulating and the risk that it poses for people who are living there — as well as the risk of exportation." 

During an outbreak of monkeypox in the Democratic Republic of the Congo, a young man shows his hands, which have the characteristic rash of monkeypox during the recuperative stage. (CDC)

U.K. cases may suggest community transmission

It's unusual to see monkeypox in Europe and North America, but there are thousands of cases on an annual basis throughout West and Central Africa, WHO officials said this week. 

The earliest known case in the U.K. was linked to travel in Nigeria, according to the U.K. Health Security Agency. But the two latest infections there, reported on Wednesday, were not tied to either travel or to other previously confirmed cases. 

"So it is possible they acquired the infection through community transmission," the agency said.

Angela Rasmussen, a virologist and researcher with the University of Saskatchewan's Vaccine and Infectious Disease Organization (VIDO) said the spread of cases in Europe and North America was surprising compared to previous outbreaks of monkeypox. 

"It does seem to be spreading, at least from the information that we have so far, through human to human contact," she told CBC News. 

"Which means that it's either that it's a more transmissible variant of monkeypox than any that we've seen before between humans, or there are behaviours that are associated with increased transmission." 

Possible sexual transmission

UKHSA said four of the cases detected in Britain self-identified as gay, bi-sexual or other men who have sex with men and has urged men who are gay and bisexual to be aware of any unusual rashes or lesions and to immediately contact a sexual health service.

The virus is known to spread through surface transmission or close contact but has not previously been characterized as a sexually transmitted infection — though it can be passed on through direct contact during sex.

"We didn't think that Ebola virus was sexually transmitted and of course, it was found in semen. Same thing with Zika virus," said Dr. Isaac Bogoch, an infectious diseases physician at Toronto General Hospital. 

"The question is, is this sexually transmitted? The answer is unknown. But of course we do know it's transmitted by people who are in close proximity to each other. So it's not surprising that it might be amplified among sexual networks of people." 

Monkeypox was first identified in the 1950s when two outbreaks occurred in colonies of monkeys used for research purposes, with the first human case reported in 1970 in the Democratic Republic of the Congo.

The illness is often likened to a milder form of smallpox, a disease which has been eradicated globally through widespread vaccination against the smallpox virus.

Smallpox vaccine effective

The smallpox vaccine is largely effective against monkeypox as well, but routine immunization programs ended in Canada in the early 1970s — leaving Canadians under 50 vulnerable to infection.

"There certainly are generations of people that have not received a smallpox vaccine and would have no protection against monkeypox infection if they were exposed," Bogoch said.

Symptoms of a monkeypox infection can include fever, headache, swollen lymph nodes, chills and exhaustion, along with lesions across the body.

There is no proven treatment, and infections can be deadly for at least one in 10 people who become infected. A vaccine developed against smallpox has been approved for monkeypox, and several anti-virals also appear to be somewhat effective.

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