Monkey pox virus, a new world problem of modern humanity. Close-up of the hands of a sick person with pimples and blisters. Smallpox vaccine.
In recent years, the resurgence of mpox, a zoonotic disease caused by the monkeypox virus, has raised global concern. With its origins in Central and West Africa, mpox has now made its presence felt beyond the African continent, prompting health authorities worldwide to take action. While often compared to smallpox due to similar symptoms, mpox is generally less severe but can still pose significant health risks, particularly in vulnerable populations.
What is Mpox (Monkey Pox)?
Mpox is caused by the monkeypox virus, an orthopoxvirus that belongs to the same family as the variola virus, which causes smallpox. The disease manifests with symptoms that resemble smallpox but tends to be milder. However, unlike smallpox, which was declared eradicated in 1980, mpox remains a public health issue, particularly in regions of Central and West Africa.
Two distinct clades of the monkeypox virus have been identified: Clade I, previously known as the Congo Basin clade, and Clade II, formerly the West African clade. Clade I is associated with more severe disease and higher mortality rates, while Clade II typically causes milder infections.
Transmission and Symptoms
Mpox is a zoonotic disease, meaning it is transmitted from animals to humans. It is commonly found in areas near tropical rainforests, where animals such as squirrels, Gambian pouched rats, dormice, and various monkey species carry the virus. Human-to-human transmission can also occur through direct contact with bodily fluids, lesions, respiratory droplets, or contaminated objects.
The disease presents with a range of symptoms, starting with a febrile phase that includes fever, intense headache, swollen lymph nodes, back pain, muscle aches, and severe fatigue. This stage typically lasts between one to three days and is followed by the skin eruption stage, which can last two to four weeks. The rash progresses through several stages, from flat lesions (macules) to raised, firm lesions (papules), to fluid-filled vesicles, to pus-filled pustules, and finally to scabs or crusts.
Diagnosis and Treatment
Polymerase chain reaction (PCR) testing is the preferred method for diagnosing mpox, as it can detect viral DNA with high accuracy. Samples are typically taken from the rash, including skin, fluid, or crusts, and in some cases, a biopsy may be performed. Antigen and antibody tests are less reliable since they cannot differentiate between different orthopoxviruses.
Treatment for mpox is primarily supportive, focusing on managing symptoms. As of now, no specific antiviral treatment has been universally approved, but research is ongoing to develop effective therapeutics.
Prevention and Control
Preventing the spread of mpox relies heavily on public awareness and education, particularly in communities where the virus is prevalent. Health workers are also crucial in preventing transmission by adhering to strict hygiene and safety protocols.
To avoid mpox infections, individuals should steer clear of close contact with infected people or contaminated materials. In healthcare settings or at home, caregivers should wear gloves and personal protective equipment when tending to the sick. Additionally, preventing animal-to-human transmission involves avoiding contact with sick or dead animals and ensuring that all animal-based foods are thoroughly cooked before consumption.
The Role of Vaccination
The end of routine smallpox vaccination programs has made populations more susceptible to mpox. The smallpox vaccine, which provided cross-protection against mpox, was shown to be 85% effective in preventing the disease. Those who were vaccinated against smallpox in childhood may still retain some level of protection.
In recent years, advancements in vaccine development have led to the creation of newer, safer vaccines for smallpox, which may also be effective against mpox. Currently, three vaccines are available in limited quantities, with some countries recommending their use for individuals at high risk of exposure.
Conclusion
As mpox cases continue to emerge in regions outside of Africa, it is crucial for global health authorities to remain vigilant. Public awareness, proper hygiene practices, and vaccination are key to controlling the spread of the virus. While mpox is less severe than smallpox, it still poses a significant health threat, especially to those who are unvaccinated or have compromised immune systems.
For more information on mpox, please consult your local health authority or visit the World Health Organization’s website. https://www.who.int
