Yes, you can get hand, foot, and mouth disease again shortly after recovering from it. Because HFMD is caused by several different viruses, the immunity you build from one infection only protects you against that specific virus strain. A second round caused by a different strain can follow within weeks.
Why One Infection Doesn’t Protect You From the Next
HFMD isn’t caused by a single virus. It’s caused by a group of enteroviruses, and each one triggers its own separate immune response. The most common culprits in the United States are coxsackievirus A16, coxsackievirus A6, and enterovirus 71 (EV-A71). After you recover from an infection caused by one of these, your body produces antibodies against that specific strain, but those antibodies do little to nothing against the others.
Think of it like catching different colds back to back. Each cold virus is distinct, so beating one doesn’t stop the next. The same logic applies to HFMD. A child who just recovered from coxsackievirus A16 has no meaningful defense against coxsackievirus A6, and vice versa.
How Quickly Reinfection Can Happen
A large study tracking over 900,000 HFMD cases in China between 2008 and 2015 found that repeat infections occurred anywhere from two weeks to over seven years after the first episode, with a median gap of about 12 months. But the short end of that range is striking: five patients with laboratory-confirmed recurrences had less than 20 days between episodes. Two of those were reinfected with a completely different enterovirus serotype, while three were reinfected with the same one.
Those same-strain reinfections within days are rare, but they show that even strain-specific immunity isn’t always airtight in the very short term. The far more common scenario is catching a different strain weeks or months later, especially during peak HFMD season in summer and early fall when multiple strains circulate simultaneously.
Coxsackievirus A6 and More Severe Rashes
If your first bout of HFMD was relatively mild, a second round caused by coxsackievirus A6 can look noticeably worse. CV-A6 has emerged over the past decade as a major cause of HFMD worldwide, and it tends to produce atypical, more extensive rashes that spread beyond the hands, feet, and mouth to cover the limbs and face. During a surveillance period in France, CV-A6 was detected in nearly 54% of enterovirus-infected children and was more frequently linked to these widespread skin eruptions.
This means a second infection isn’t necessarily milder than the first. The severity depends more on which virus is responsible than on whether you’ve had HFMD before.
Adults Can Get It Again Too
HFMD is thought of as a childhood illness, but adults are not immune, and repeat infections happen at any age. Clinical reports increasingly document adult cases, sometimes with atypical presentations. In adults, the rash may start in the mouth and around the lips before spreading to the palms and soles, which is the reverse of the typical pattern seen in children. Adults who catch HFMD from their kids during one outbreak can catch it again from a different strain in a subsequent outbreak.
Viral Shedding Lasts Longer Than Symptoms
One reason HFMD spreads so easily, and reinfection happens so readily in households and daycare settings, is that the virus lingers in stool long after symptoms resolve. Enterovirus 71 can be shed in stool for up to 10 weeks, and coxsackievirus A16 for up to 6 weeks. During that window, a recovering child can still pass the virus to siblings or classmates, and those contacts can carry different strains back in return.
This creates a cycle where exposure to new strains is nearly continuous in group care environments. Good hand hygiene, especially after diaper changes and bathroom trips, is the most practical way to break that cycle.
Returning to Daycare or School
CDC guidelines say children with HFMD can return to daycare or school once they have no fever, feel well enough to participate, and aren’t drooling excessively from mouth sores. These same criteria apply whether it’s a first infection or a repeat. There’s no required waiting period tied to a specific number of days, though local health departments may impose stricter rules during active outbreaks.
Keep in mind that even after your child meets these criteria, they can still shed virus in their stool for weeks. That’s not a reason to keep them home indefinitely, but it is a reason to be diligent about handwashing at home and to let caregivers know about the recent illness so they can do the same.