Syphilis is creeping back in England, and pregnant women are paying the price

Reading the headline might make you think of a plague era, but this is happening now, in modern England. Syphilis is not just a historical footnote; it is a living pathogen that has found a steady foothold among a specific demographic. The overall trend looks positive to a casual glance, with total diagnoses falling. Yet beneath that aggregate comfort, a distinct segment of the population is seeing numbers climb. The UK Health Security Agency data confirms the drop in total cases, but it also flags a concerning upward trajectory that demands a closer look.

This is not just a line item in a quarterly report. It is a genuine public health blind spot that could leave unborn children vulnerable to lifelong damage. The statistics paint a strange picture. While the total number of cases dropped by 13.5% in 2025, the count for heterosexual women actually rose by 4.8%. That divergence is the real story. It is the signal that the current system is missing a growing problem while focusing on a shrinking one.

The hidden surge in a specific demographic

The official UKHSA figures show a clear decline from 9,553 diagnoses in 2024 to 8,262 in 2025. On the surface, that looks like progress. But look closer at the breakdown and the narrative changes. Among heterosexual women, the number of cases went up, rising from 838 in 2024 to 878 in 2025. This 4.8% increase is not a statistical noise. It is a red flag. It suggests that current prevention and detection methods are not reaching this group with the necessary effectiveness.

Why is this group seeing a rise? The biology of the disease offers a simple explanation. Syphilis is notoriously stealthy in its early stages. The initial signs are often mild, painless, and can vanish on their own without treatment. This silent progression means many women, who might not consider themselves at risk, are carrying the infection without knowing. They are walking around, potentially spreading it to partners, all while feeling perfectly healthy.

Why the current screening model may be failing

The NHS currently mandates universal early-pregnancy screening for syphilis as part of the Infectious Diseases in Pregnancy Screening programme. This is a crucial safety net for many. However, it has a significant blind spot. If a woman contracts the infection after her first trimester test, she will not be screened again until delivery, if at all. The gap between those two points is where the real danger lives. It is a window of vulnerability that the current protocol leaves wide open.

The UK National Screening Committee is now reviewing whether to introduce a routine repeat test in the third trimester. The logic is simple and compelling. A second test in the final three months of pregnancy could catch infections acquired later. This would prevent congenital syphilis, a severe condition that can lead to miscarriage, stillbirth, or lifelong health issues for the baby. It is a minor procedural change with potentially major, life-saving consequences.

The silent symptoms that go undetected

Understanding the risk requires understanding how the disease deceives. Early symptoms typically appear as small, painless sores around the genitals, anus, or mouth. Because they do not hurt, they are easily ignored or mistaken for minor irritation. These sores can also appear on the lips, hands, or buttocks. If patients are not aware of these specific signs, diagnosis becomes much harder, and the infection can go unnoticed for months.

As the infection progresses, the symptoms shift. A non-itchy rash may appear on the palms and soles of the feet. Swollen lymph glands, flu-like symptoms, and patchy hair loss can follow. These later signs can emerge months after the initial exposure. By this time, the bacteria have had time to spread throughout the body. The risk of transmission to a partner or an unborn child has increased significantly, making early detection even more critical.

The stakes for unborn children

The most alarming aspect of this trend is its direct impact on pregnancy. Syphilis can be passed from mother to baby during pregnancy. This leads to congenital syphilis, a devastating condition for the child. It can result in miscarriage, stillbirth, or severe, lifelong health complications that affect the brain, heart, or nerves. The damage is often irreversible, leaving families to cope with a tragedy that could have been prevented.

UKHSA guidance is clear on the severity of the risk. They warn that the disease can cause serious, irreversible, and potentially life-threatening problems. This is not a theoretical concern. It is a documented outcome of untreated infection during pregnancy. The rising numbers among women of childbearing age make this a pressing issue for obstetricians and public health officials. The stakes are too high to ignore the data.

A treatable disease, but only if caught early

The good news is that syphilis is entirely treatable with antibiotics. It is not a death sentence. If caught in the early stages, it can be cured completely without long-term damage. The problem is not the treatment itself, but the detection. Because the symptoms are often mild or absent, many cases go undiagnosed until they have progressed to a more dangerous stage. The window for easy cure narrows as the infection spreads.

This is where the push for expanded testing becomes crucial. By identifying the infection early, healthcare providers can treat the mother and protect the baby. The current system relies on a single early test, which may miss infections acquired later in pregnancy. Adding a third-trimester test would close this gap and provide a final line of defense for the most vulnerable patients. It is a simple addition that could save lives.

The path forward for public health

The review by the UK National Screening Committee is a step in the right direction. It acknowledges that the current approach is not sufficient for all women. The decision to add a routine repeat test will likely depend on cost-effectiveness analyses and logistical feasibility, but the medical argument is strong. The potential to prevent congenital syphilis is a compelling case for action. The data supports the need for a more robust screening protocol.

In the meantime, awareness is key. Women should be informed about the symptoms of syphilis and the importance of regular sexual health checks. Healthcare providers need to be vigilant about the rising trend among heterosexual women. This is not just a historical curiosity. It is a present-day challenge that requires a modern, responsive public health strategy. The time to act is now.