About Mpox (Monkeypox)

Overview

Mpox, previously called monkeypox, is a zoonotic disease (a disease that can spread from animals to humans) caused by a virus called monkeypox virus (MPXV). The disease was first identified in 1958 after cases of a pox-like illness were observed in monkeys. Since then, monkeypox has been found in various central and western African countries, and more recently, there have been cases reported in other parts of the world. The virus can infect a wide range of mammalian species, but its natural host is still unknown. Mpox shares similarities with smallpox, with symptoms including fever, fatigue, swollen lymph nodes, and a rash that progresses through different stages. However, mpox is generally less severe than smallpox. The duration of illness is typically 2-4 weeks, and the case fatality rate varies depending on the strain of the virus.

Causes and Risk Factors

Here are the disease causes of mpox:

• Mpox is caused by the monkeypox virus. The virus is transmitted to humans through direct contact with infected animals or through human-to-human transmission.
• The virus enters the body through breaks in the skin or mucous membranes and replicates in the respiratory tract, lymph nodes, and other organs.
• The infection causes a febrile phase characterized by fever and skin rash. In some cases, a second phase occurs when the skin lesions fill with pus and become pustular, indicating a worsening of the patient's health status.

Non-modifiable risk factors of mpox cannot be changed or controlled. These include:

• Age: Being young has been identified as a non-modifiable risk factor for contracting monkeypox.
• Sex: Being male has also been associated with an increased risk of monkeypox.

Modifiable risk factors of mpox are factors that can be influenced or changed. These include:

• Exposure to sick animals: Daily exposure to sick animals or cleaning their cages/bedding has been identified as a modifiable risk factor for acquiring mpox.
• Human-to-human transmission: Risk behaviors such as sleeping in the same room or bed, living in the same household, men who have sex with men (MSM), or sharing dishes with an infected person can increase the risk of human-to-human transmission.
• Exposure to animals: Living near or visiting forests and sleeping outside or on the ground have been identified as factors that increase the risk of exposure to animals and subsequent animal-to-human transmission.

Symptoms

Common symptoms of mpox include:

• Fever
• Chills
• Enlarged lymph nodes
• Muscle and body aches
• Exhaustion

As mpox progresses or reaches higher severity, the following symptoms may occur:

• Painful blisters and lesions: These often begin on the face and can spread to other parts of the body, especially the face, palms, and soles of the feet.
• Rash or pox: This rash consists of painful blisters and lesions that develop 1 to 3 days after fever onset. It can last for several weeks.
• Asthenia and fatigue: Feeling weak and tired
• Headache
• Myalgia: Muscle pain
• Enlarged lymph nodes in different areas of the body such as the inguinal (groin), cervical (neck), and axillary (armpit) regions
• Ulcers and vesicles on the genitals and anal region: This symptom has been highlighted in recent outbreaks.

If you experience any symptoms or are concerned about mpox, it's best to consult with a healthcare professional for an accurate diagnosis and appropriate treatment.

Diagnosis

To diagnose mpox, several examinations, tests, and procedures are commonly performed:

• Clinical evaluation: A healthcare professional will assess your symptoms and medical history to determine if they match with mpox. This includes looking for a rash with lesions that go through specific stages, asking about recent travel, contact with infected people or animals, and other symptoms like fever and swollen lymph nodes.
• Laboratory testing: Various laboratory methods can be used to detect monkeypox virus, including:
  • Nucleic acid amplification testing: Real-time polymerase chain reaction (PCR) is commonly used to detect the virus in samples from skin lesions or open sores. Pharyngeal swabs are also used in clinical and research settings, while semen samples are mainly tested in research to study possible sexual transmission.
  • Serological testing: Enzyme-linked immunosorbent assay (ELISA) can detect specific IgM and IgG antibodies in the blood. However, this test may not be very accurate because it can react to other similar viruses, making it harder to tell them apart.

To determine the severity of mpox, additional examinations and tests may be performed:

• Clinical observation: Healthcare professionals will monitor the progression of symptoms, such as lymphadenopathy (swollen lymph nodes), fever, myalgia (muscle pain), headache, and how the skin lesions develop.
• Laboratory findings: Certain laboratory findings may indicate the severity of monkeypox, such as hypoalbuminemia (low albumin levels), high transaminase levels, and low blood urea nitrogen values.

It's important to note that specific diagnostic procedures may vary depending on available resources and guidelines in different locations. Consultation with healthcare professionals is crucial for accurate diagnosis and assessment of mpox.

Treatment Options

The goals of treatment for mpox are to manage symptoms, prevent complications, and support the body's natural healing process. Here are the recommended treatments and their mechanisms:

• Symptomatic management: This involves managing symptoms such as fever and respiratory distress with antipyretics (fever-reducing medications) and supplemental oxygen if necessary. It helps alleviate discomfort and promote comfort during the illness.
• Supportive management: This includes maintaining nutrition, fluid, and electrolyte balance. It is crucial for overall well-being and helps the body fight off the infection.
• Timely diagnosis of secondary infections: Identifying and treating secondary bacterial infections promptly is essential. Antibiotics may be prescribed to target these infections and prevent further complications.
• Antiviral therapy: While no specific antivirals are approved for mpox, there are some medications that may have a potent action against the virus. Tecovirimat is an antiviral drug approved for treating smallpox, which can also inhibit the monkeypox virus. However, its effectiveness in human monkeypox is still being studied.
• Vaccination: Available for people exposed to the virus or who have risk of exposure.
• Self-care and health behavior changes: Includes avoiding contact with infected or dead animals, frequent handwashing, safe sex practices, and avoiding contact with people who are infected.

It's important to note that treatment decisions should be made by healthcare professionals based on individual circumstances.

Medication dosing may be affected by many factors. Check with your health care professional about dosing for your individual situation. Side effects can occur. Check with your health care professional or read the information provided with your medication for side effect information.