Mpox (formerly monkeypox) typically lasts 2 to 4 weeks from the first symptom to the point where all skin lesions have fully healed. The total timeline varies depending on how many lesions develop, whether you’ve been vaccinated, and how well your immune system functions. Here’s what to expect at each stage.
From Exposure to First Symptoms
After exposure to the virus, there’s a window of 3 to 17 days before anything happens. Most people notice their first symptoms roughly 1 to 2 weeks after contact. During this incubation period, you feel fine and aren’t contagious. The CDC recommends monitoring for symptoms up to 21 days after a known exposure, since onset can occasionally fall at the later end of that range.
The Early Flu-Like Phase
For many people, the illness starts with systemic symptoms: fever, headache, muscle aches, swollen lymph nodes, chills, or fatigue. This phase typically lasts 1 to 4 days before the rash appears, though not everyone experiences it. Some people develop the rash as their very first sign, skipping the flu-like stage entirely. Swollen lymph nodes are one of the more distinctive early clues, since many similar viral rashes don’t cause noticeable lymph node swelling.
How the Rash Progresses
The rash moves through a predictable sequence of stages. It begins as flat spots, which rise into firm bumps, then fill with clear fluid, and finally become pus-filled. Over the following days, those lesions crust into scabs. Each individual lesion goes through this full cycle over roughly 1 to 2 weeks, but new lesions can continue appearing for several days, which stretches the overall timeline.
The number of lesions varies widely. Some people develop just a handful in one area, while others get dozens spread across multiple body sites. More lesions generally means a longer total illness, simply because the last ones to appear need their own time to heal. Lesions can show up on the face, hands, feet, chest, genitals, or inside the mouth and rectum, and their location affects how uncomfortable the experience is.
When You Stop Being Contagious
You can spread the virus starting about four days before your first symptom appears and remain contagious until every scab has fallen off and a fresh layer of intact skin has formed underneath. That’s the specific benchmark: not when the scabs form, but when they’ve all naturally separated and new skin is visible. Until that point, the virus can still be transmitted through close physical contact, direct touch with lesions, or contaminated materials like bedding.
For most people, this contagious window lasts about 2 to 4 weeks from symptom onset. Isolation is recommended for the full duration.
How Vaccination Shortens the Course
People who received two doses of the JYNNEOS vaccine before getting infected tend to have a noticeably milder and shorter illness. Compared to unvaccinated patients, fully vaccinated individuals develop fewer lesions (a median of one affected body area versus four) and are significantly less likely to experience systemic symptoms like fever, headache, and muscle pain.
Hospitalization rates tell a similar story. Only about 1.4% of fully vaccinated patients with mpox required hospitalization, compared to 8.4% of unvaccinated patients. No deaths occurred among fully vaccinated individuals in a large CDC analysis covering May 2022 through May 2024, while 56 deaths were recorded among unvaccinated patients during the same period. Fewer lesions and milder symptoms generally translate to a faster path through the healing stages.
Longer Recovery for Immunocompromised People
The 2 to 4 week timeline applies to people with healthy immune systems. For those who are significantly immunocompromised, particularly people with advanced or untreated HIV, the illness can drag on much longer and become far more serious. These patients face higher rates of widespread rash, secondary bacterial infections, and complications affecting the eyes, brain, or bloodstream. The prolonged course also means a longer window of contagiousness.
A case series of mpox in organ transplant recipients found that most patients cleared their infection within 30 days with treatment, though one death occurred in the group. For people with very low immune cell counts, the virus can persist for weeks beyond the typical timeline because the body struggles to eliminate it. Starting or resuming treatment for underlying HIV improves immune function and helps the body fight the infection more effectively.
Scarring After Recovery
Once all the scabs fall off, the skin underneath is new but not necessarily back to normal. Many people notice discolored spots, either darker or lighter than their surrounding skin, at the sites where lesions healed. These marks often fade over several months but can take up to a year to blend in fully. In some cases, mpox lesions leave permanent scars, particularly where lesions were deep, numerous, or became secondarily infected with bacteria. The face, hands, and areas that experienced the densest clusters of lesions are most likely to scar.