Toxic shock syndrome is extremely rare. The annual incidence in the general population falls between 0.03 and 0.07 cases per 100,000 people, and that rate has remained stable for years. To put that in perspective, in a city of one million people, you’d expect roughly one to seven cases in an entire year. It’s a serious condition worth understanding, but the odds of developing it are very low.
How Rates Have Changed Over Time
TSS first grabbed national attention in 1980, when the CDC logged 890 reported cases in the United States, 91% of them linked to menstruation. At the time, the incidence peaked at roughly 13.7 per 100,000 people, driven largely by a specific brand of ultra-absorbent tampons that has long since been pulled from the market. Once manufacturers changed how tampons were designed and regulated, case numbers dropped sharply and have stayed low ever since.
Today’s incidence of 0.03 to 0.07 per 100,000 represents a decline of more than 99% from that 1980 peak. The syndrome didn’t disappear, but it went from a public health crisis to a genuinely uncommon event.
Who Gets It
TSS affects females more often than males. Among people under 21, the average annual incidence in females is about 1.4 per 100,000 compared to 0.6 per 100,000 in males. About two-thirds of cases in this age group occur in teens between 13 and 20, which aligns with the onset of menstruation. The median age of patients under 21 is around 12 to 14 years old.
That said, TSS is not exclusively a disease of young women who use tampons. Children under 5 account for roughly 9 to 17% of pediatric cases depending on the population studied, and boys and men make up about a third of all cases in younger age groups. Anyone with a staph or strep infection that produces certain toxins can develop it.
Menstrual vs. Non-Menstrual Cases
Tampon use remains the most well-known risk factor, and menstruation-related cases still account for 50 to 70% of all TSS in women of reproductive age. The connection isn’t to tampons themselves but to the environment they can create: a warm, moist space where Staphylococcus aureus bacteria can grow and release toxins into the bloodstream.
The remaining 30 to 50% of cases have nothing to do with menstruation. TSS can develop after surgery, with post-surgical cases occurring in roughly 0.003% of operations (about 3 in every 100,000 surgeries). It can also follow skin infections, burns, insect bites, or any wound where staph or strep bacteria gain a foothold. Nasal packing after surgery is another recognized trigger.
Staph TSS vs. Strep TSS
Two different bacteria cause two distinct forms of toxic shock syndrome. Staphylococcal TSS, the type linked to tampons and wound infections, is the more commonly discussed form and tends to have a lower fatality rate. Streptococcal TSS (sometimes called STSS) is caused by group A strep, the same family of bacteria behind strep throat. Invasive group A strep infections occur at a rate of 1.5 to 5.2 per 100,000 people annually, and roughly 8 to 14% of those patients go on to develop streptococcal TSS.
The strep form is generally more dangerous. Despite aggressive hospital treatment, the mortality rate for streptococcal TSS can exceed 30%, and that risk climbs with age. Children tend to fare significantly better than adults. Staphylococcal TSS, while still a medical emergency, carries a lower death rate when treated promptly.
What TSS Looks and Feels Like
TSS comes on fast and hits multiple body systems at once. The hallmarks are a high fever (102°F or higher), a sudden drop in blood pressure, and a flat, sunburn-like rash that can appear anywhere on the body. Within one to two weeks of the illness, skin on the hands and feet often begins to peel.
Beyond those signature signs, TSS typically involves three or more of the following: vomiting or diarrhea, severe muscle pain, redness of the eyes or mouth or vaginal lining, confusion or disorientation, and signs of kidney or liver stress. Because so many organ systems can be involved simultaneously, the illness can escalate from feeling like a bad flu to a life-threatening emergency within hours.
Recurrence Risk
One unsettling feature of staphylococcal TSS is that it can come back. Early research published in the New England Journal of Medicine found that some patients experienced recurrent episodes during subsequent menstrual periods. The body doesn’t reliably build lasting immunity to the staph toxins responsible, which means someone who has had TSS once should be especially careful about known risk factors going forward.
Reducing Your Risk
The FDA’s tampon safety guidelines are straightforward: use the lowest absorbency tampon that works for your flow, change it every 4 to 8 hours, and never leave a single tampon in for more than 8 hours. A practical test: if you can comfortably wear one tampon for a full eight hours without needing to change it, the absorbency is probably higher than you need. Alternating between tampons and pads, particularly overnight, further lowers risk.
For non-menstrual TSS, the key is basic wound care. Keep surgical sites, cuts, and burns clean. Watch for signs of spreading infection like increasing redness, swelling, or fever, especially in the first few days after surgery or injury. Post-surgical TSS is exceedingly rare at 0.003% of cases, but early recognition of unusual symptoms makes a significant difference in outcomes.
Modern tampons are manufactured under FDA oversight, with requirements for chemical safety testing and material disclosure. The ultra-absorbent designs that fueled the 1980 epidemic no longer exist. Current products use cotton, rayon, or blends that must meet standards for purity, including freedom from dioxin and pesticide residues. These changes are a major reason TSS rates collapsed and have stayed low for decades.