STIs in Pregnancy in India: Screening and Protecting Your Baby

• HIV and syphilis screening is mandatory and free for every pregnant woman at her first ANC visit under NACO's PPTCT programme — regardless of background or perceived risk.
• Most STIs in pregnancy are silent. You can feel completely healthy and still carry chlamydia, gonorrhoea, syphilis, hepatitis B or HIV.
• With early diagnosis and treatment, the chance of passing HIV or syphilis to the baby falls to under 1 percent.
• The antibiotics and antivirals used (penicillin, azithromycin, ceftriaxone, acyclovir, metronidazole, tenofovir) have long safety records in pregnancy.
• An STI is a medical condition, not a verdict on your character — many Indian women acquire one from a single, long-term partner.
• Your test results are confidential by law; the HIV and AIDS (Prevention and Control) Act, 2017 protects you from disclosure and discrimination.

STIs in pregnancy carry two kinds of risk: to you, and to your baby. Left untreated, several can cross the placenta or pass during birth, and some quietly raise the chance of preterm labour and premature birth, low birth weight, miscarriage or stillbirth.

The difficulty is that most of these infections are invisible. Around 80 percent of women with chlamydia and more than half of those with gonorrhoea have no symptoms at all, and HIV, syphilis and hepatitis B can sit silently for years. A small increase in discharge is easily dismissed as 'normal for pregnancy.' That is exactly why screening — testing everyone, not only those who 'seem at risk' — is the standard of care.

The reassuring part is how well treatment works once an infection is found. Almost every STI relevant to pregnancy is either curable with antibiotics or controllable to the point where transmission to the baby becomes very unlikely. The earlier in pregnancy you are tested, the more the system can do to protect both of you.

In India, the National AIDS Control Organisation (NACO) runs STI screening in pregnancy through the Prevention of Parent-to-Child Transmission (PPTCT) programme. At your first antenatal (ANC) booking visit — at a PHC, CHC, district hospital or private clinic — you should be offered testing for HIV and syphilis as standard. This is not optional or risk-based; it is meant for every pregnant woman. Most facilities now also include hepatitis B (HBsAg) in the booking bloods, alongside the usual haemoglobin, blood group and urine checks covered in our guide to first-visit pregnancy blood tests.

In the public system the tests are usually done at an Integrated Counselling and Testing Centre (ICTC), often sited next to the ANC clinic so women are not 'lost' between departments. HIV testing involves a short, confidential pre-test conversation and your consent. If a test is positive, you are linked the same day to an ART centre under the national 'test and treat' policy. Syphilis screening uses an RPR or VDRL blood test, confirmed where possible with a treponemal test (TPHA); in practice, many facilities begin penicillin promptly on a reactive result rather than waiting, because untreated syphilis is dangerous for the baby.

All of this is free in the government system, integrated with schemes such as Janani Shishu Suraksha Karyakram (JSSK) and the Pradhan Mantri Surakshit Matritva Abhiyan (PMSMA), which offers a free specialist ANC visit on the 9th of every month. ASHA workers and ANMs help ensure rural women actually reach a facility for their screen.

Chlamydia (caused by Chlamydia trachomatis) and gonorrhoea (Neisseria gonorrhoeae) are common, frequently silent, and not part of India's routine antenatal screen — so they are often missed until a complication appears. Studies at Indian medical colleges have reported chlamydia in a meaningful minority of pregnant women, comparable to rates abroad. When there are symptoms, they may be no more than a slight change in discharge, easily mistaken for normal pregnancy Vaginal Discharge in India: Normal vs Abnormal & When to Worry.

In pregnancy these infections matter for two reasons. Both are linked to preterm premature rupture of membranes (where the waters break early) and preterm birth. And if present at delivery, the baby can be exposed in the birth canal — chlamydia can cause neonatal conjunctivitis (appearing 5–14 days after birth) and, less often, chlamydial pneumonia, while gonorrhoea can cause a severe eye infection (gonococcal ophthalmia neonatorum) within the first few days that is a medical emergency. The antibiotic eye ointment given to newborns in Indian hospitals helps, but it is not a substitute for treating the mother. For the wider picture outside pregnancy, see chlamydia symptoms and treatment and our dedicated guide to gonorrhoea in pregnancy.

Diagnosis is most accurate with a NAAT (nucleic acid amplification test) on a vaginal swab or urine sample, available in larger government labs (GeneXpert, Truenat) and through private chains; a private STI panel typically costs around ₹3,000–₹7,500. Treatment is safe and effective in pregnancy: a single oral dose of azithromycin for chlamydia, and an injection of ceftriaxone (often combined with azithromycin) for gonorrhoea, because the two infections frequently occur together. Crucially, the partner must be treated at the same time, or re-infection is likely — many Indian clinicians provide partner medication or a prescription directly to the woman to make this easier.

Syphilis is one of the most important infections to catch in pregnancy because its effects on the baby are devastating yet almost entirely preventable. Untreated, it can cause late miscarriage, Stillbirth in India: Rights, Aftercare, Grief, Next Pregnancy, newborn death, or a baby born with congenital syphilis (bone changes, anaemia, an enlarged liver and spleen, deafness or eye damage). This is why a reactive VDRL/RPR is acted on quickly.

The only treatment proven to reliably protect the fetus is benzathine penicillin G, given as an intramuscular injection and free through the NACO supply chain. The number of doses depends on the stage of infection. Early syphilis usually needs a single 2.4 million-unit injection; syphilis of unknown duration (which is common when it is found on a routine screen with no symptom history) needs three weekly injections of 2.4 MU, given exactly 7 days apart. To count the baby as protected at birth, treatment should be completed at least 30 days before delivery. For the full clinical picture in non-pregnant women, see our guide to syphilis treatment in Indian women.

After the first injection, some women get a short-lived fever, chills or headache (the Jarisch–Herxheimer reaction) as the bacteria die off; in pregnancy this is monitored carefully because it can occasionally trigger contractions. If you have a genuine penicillin allergy, the safe path is penicillin desensitisation in hospital — alternatives like erythromycin do not reliably cross the placenta to treat the baby, so desensitisation is preferred at tertiary centres. Your titres are rechecked after treatment to confirm it worked, and your partner must be treated to prevent re-infection.

An HIV-positive pregnancy in India is managed through the PPTCT programme, which has cut mother-to-baby transmission dramatically over two decades. The approach is 'Option B+': every pregnant woman diagnosed with HIV starts lifelong antiretroviral therapy (ART) immediately, whatever her CD4 count. The standard free first-line regimen is a single daily fixed-dose pill of tenofovir, lamivudine and dolutegravir (TLD), which usually brings the viral load to undetectable within 8–12 weeks. Our broader guide to HIV and pregnancy in India walks through safe conception and your rights in detail.

Taking ART consistently is the single biggest thing that protects your baby. ICTC counsellors help build an 'adherence plan' — linking the pill to a daily routine, setting reminders — and explain how the medicine works as a shield. Viral load is checked at the start and again near term (around 34–36 weeks), and this result guides delivery. Contrary to a common myth, an HIV-positive woman who is virally suppressed can have a normal vaginal delivery safely; a caesarean is reserved for a high or unknown viral load near labour, or for the usual obstetric reasons.

After birth, the baby is given nevirapine syrup as prophylaxis (usually 6 weeks, sometimes 12) and tested under the Early Infant Diagnosis protocol — a DNA-PCR at 6 weeks, repeated at 6 months, with a final antibody test at 18 months. All of this is free in government facilities. On feeding, NACO recommends exclusive breastfeeding for the first 6 months while the mother is on consistent ART, because in many Indian homes the risks of unsafe formula (contaminated water, inconsistent supply) outweigh the very small residual risk; mixed feeding is avoided as it raises transmission risk. If you are HIV-negative but at ongoing risk, PrEP for HIV prevention is worth discussing before or between pregnancies.

Genital herpes (HSV-1 or HSV-2) is common and, for most women, more of a nuisance than a danger in pregnancy. The serious concern is neonatal herpes, which is rare but can be devastating. The risk is highest when a woman catches her first herpes infection in the last weeks of pregnancy, because she has not yet made protective antibodies to pass to the baby. For women with long-standing recurrent herpes, the risk of passing it to the baby is low (around 1–3 percent), but it still needs a delivery plan. Our guides to herpes and pregnancy and neonatal herpes for Indian parents cover this in depth.

Herpes is not routinely screened in pregnancy in India; it is usually diagnosed when a woman has painful blisters or ulcers, confirmed by a PCR swab of the lesion. Treatment uses acyclovir or valacyclovir, both with a long safety record in pregnancy. A first outbreak is treated with acyclovir 400 mg three times daily for 7–10 days. For women with recurrent herpes, suppressive therapy from around 36 weeks (for example acyclovir 400 mg twice or three times daily) prevents outbreaks at the time of labour and reduces the need for a caesarean.

The mode of delivery is decided in labour: if there are active sores or warning (prodromal) symptoms, an elective caesarean is recommended to avoid the baby contacting the virus in the birth canal; with no active lesions, a vaginal birth is safe. After birth, families should know that cold sores (oral herpes) can also infect a newborn — anyone with a visible cold sore should not kiss the baby, an important point during naming ceremonies and frequent visits.

Trichomoniasis and bacterial vaginosis (BV) are the two most common causes of abnormal discharge in pregnant women. Trichomoniasis is a true STI caused by a parasite, Trichomonas vaginalis — classically a yellow-green, frothy, foul-smelling discharge with itching. BV is not really an STI but an imbalance of the vaginal bacteria, giving a thin greyish discharge with a 'fishy' odour. Both are linked to a higher risk of preterm rupture of membranes and preterm birth. See our dedicated guides to trichomoniasis in Indian women and recurrent bacterial vaginosis.

It's worth getting a proper diagnosis rather than self-treating, because in India's hot, humid climate yeast infections are also very common, and the creams for yeast will not treat trich or BV. A simple wet-mount microscopy usually tells them apart. Metronidazole is the mainstay of treatment for both, and FOGSI guidance confirms it is safe across all trimesters — older worries about the first trimester are outdated. Finish the full course even if symptoms settle early.

The key difference is partner treatment. For trichomoniasis the partner must be treated too (he is usually symptom-free), or re-infection is almost guaranteed. For BV, partner treatment is not recommended and does not prevent recurrence; women with recurrent BV are instead advised to avoid douching and scented 'intimate washes,' which can worsen the imbalance.

India has a large number of chronic hepatitis B carriers, and mother-to-baby transmission at birth is the main way the virus spreads. It matters because a baby who catches hepatitis B at birth has around a 90 percent chance of becoming a chronic carrier, with a lifelong risk of liver cirrhosis and liver cancer. That is why every pregnant woman is screened with the HBsAg blood test.

If you test positive, your doctor will check further markers (HBeAg and HBV-DNA viral load). If the viral load is high (generally above 200,000 IU/ml), a daily antiviral called tenofovir (TDF) is started around 28–32 weeks to lower it before delivery; tenofovir is considered safe in pregnancy.

The most important protection happens in the first 12 hours after birth. Every baby of a hepatitis-B-positive mother should get two injections at different sites: the hepatitis B vaccine (the 'birth dose,' free under the Universal Immunisation Programme) and hepatitis B immune globulin (HBIG). HBIG is often a private purchase costing roughly ₹4,000–₹8,000, and it must be given within that 12-hour window, so confirm in advance that your hospital has it or that you can procure it. With both given, breastfeeding is safe and encouraged — hepatitis B is not spread through breast milk. The mother needs lifelong follow-up with a liver specialist, and the partner and other children should be tested and vaccinated.

Understanding the stakes makes the screening less abstract. Infections passed in the womb or during birth tend to hit a newborn harder because the baby's immune system is still developing.

• Congenital syphilis: untreated, can cause stillbirth or a baby with bone changes, severe anaemia, an enlarged liver and spleen, deafness and eye damage — all prevented by a simple course of penicillin in pregnancy.
• Neonatal eye infection (ophthalmia neonatorum): from chlamydia or gonorrhoea; gonococcal infection is an emergency that can threaten sight within a day.
• Chlamydial pneumonia: in some exposed babies, appearing in the first weeks to months with a distinctive cough.
• Chronic HIV or hepatitis B: a lifelong condition for the child unless transmission is prevented — which is exactly what PPTCT and the birth-dose vaccine plus HBIG are designed to do.
• Preterm birth and low birth weight: trichomoniasis, BV and other genital infections drive inflammation that can trigger early labour, raising the risk of NICU admission and complications of prematurity.

In India, an STI diagnosis in pregnancy is rarely just a medical event — it can stir guilt, shame and fear about family. Two things help. First, framing: an STI is a common infection caused by bacteria or viruses, not a verdict on your character. Many women acquire one from a single, long-term partner who never had symptoms. Second, knowing the medical facts: treating both partners protects the baby and prevents 'ping-pong' re-infection.

Partner notification is a medical necessity but is handled sensitively. Your safety comes first — disclosure to your husband or in-laws is always your choice, and where there is fear of harm, ICTC staff can invite the partner for a general 'family health screen' rather than naming an STI up front. Couple counselling is offered to shift the conversation from blame toward shared responsibility for the baby.

Confidentiality is also a legal right, not just an ethical one. The HIV and AIDS (Prevention and Control) Act, 2017 prohibits disclosing your HIV status to anyone — family, employer or insurer — without your consent, and bans discrimination in healthcare, so you cannot be refused care or a hospital bed. The national helpline 1097 offers a free, anonymous, multilingual space for questions, and organisations such as the Humsafar Trust and YRGCARE provide specialised counselling.

Care splits along the public–private divide. In the public sector, under the National Health Mission and NACO, the core STI services are free: HIV and syphilis testing at ICTCs, hepatitis B screening at ANC clinics, and life-saving medicines like ART and benzathine penicillin. PMSMA adds a free specialist ANC visit on the 9th of each month.

In the private sector, costs are out of pocket. A booking blood panel (HIV, syphilis, hepatitis B) in a metro typically runs ₹2,000–₹4,500. The silent STIs — chlamydia and gonorrhoea — are usually not included; a NAAT-based panel adds roughly ₹4,000–₹9,000, and it is often only done if you ask for it. Hepatitis B immune globulin (HBIG) for an exposed newborn is commonly a private purchase at around ₹4,500–₹9,000 per dose.

A practical hybrid works well for many families: use the free ICTC for testing and counselling, choose affordable generic medicines (Jan Aushadhi stores stock standard STI antibiotics for very little), and reserve private care for specialised needs. Most maternity insurance covers some of this, but outpatient diagnostics and pre-existing conditions are often excluded, so check your policy before delivery. Government ambulance services (102/108) and JSSK help cover transport for women who must travel to a tertiary centre.

Book a pregnancy STI screen at your first antenatal visit even if you feel completely well — that is the point of screening. Beyond that, contact your obstetrician promptly if you notice any of the following during pregnancy.

• National AIDS Control Organisation (NACO) — PPTCT and National Guidelines for HIV Care
• WHO — Mother-to-child transmission of HIV (prevention of vertical transmission)
• WHO — Congenital syphilis and elimination of mother-to-child transmission
• WHO — Sexually transmitted infections (STIs) fact sheet)
• CDC — Sexually Transmitted Infections Treatment Guidelines: STIs During Pregnancy
• Ministry of Health and Family Welfare, India — Guidelines on Prevention and Management of RTIs/STIs
• The HIV and AIDS (Prevention and Control) Act, 2017 — NACO
• ACOG — Hepatitis B and Hepatitis C in Pregnancy; Management of Genital Herpes in Pregnancy