Fever in pregnancy is never a minor symptom, and during the post-monsoon months in Jaipur, dengue sits high on the list of possible causes. Dengue during pregnancy requires closer monitoring than dengue in non-pregnant adults. Normal physiological changes of pregnancy can hide early signs of plasma leakage and shock, and several features of dengue overlap with serious obstetric conditions such as HELLP syndrome. With timely assessment, however, most mothers recover well.

What Is Dengue, and Why Does Pregnancy Change the Picture?

Dengue is a mosquito-borne viral infection caused by four closely related dengue virus serotypes. It is transmitted by Aedes mosquitoes, which bite mainly during the day. After an incubation period of 4 to 10 days, the illness passes through a febrile phase, a critical phase around days 3 to 7 when capillary leakage can occur, and a recovery phase.

Pregnancy alters how dengue presents:

• Haemodilution: Plasma volume rises by up to 40 to 50 per cent in pregnancy, which lowers baseline haematocrit and can mask the rise that signals plasma leakage.
• Cardiovascular changes: A naturally higher heart rate and lower blood pressure in mid-pregnancy can make early shock harder to detect.
• Physiological fluid: Mild swelling and breathlessness are common in pregnancy, which can disguise fluid accumulation.

What Risks Does Dengue Pose to Mother and Baby?

Published studies have associated dengue in pregnancy with:

• A higher likelihood of severe dengue and maternal complications
• Preterm birth
• Low birth weight
• Postpartum haemorrhage, particularly if delivery coincides with the critical phase and low platelets
• Miscarriage or stillbirth in some reports, particularly with severe disease
• Vertical transmission to the baby when infection occurs close to delivery, with neonatal dengue typically appearing in the first days after birth

Risk depends on disease severity, gestational age and timing of infection relative to delivery.

What Are the Dengue Symptoms During Pregnancy?

Dengue symptoms during pregnancy include sudden high fever, severe headache, retro-orbital pain, myalgia, joint pain, nausea, vomiting and a skin rash. Petechiae, or easy bruising, may appear.
Warning signs requiring urgent review include persistent vomiting, abdominal pain, bleeding from gums or nose, vaginal bleeding, breathlessness, lethargy or restlessness, and reduced urine output.
Abdominal pain, low platelets and raised liver enzymes are also seen in HELLP syndrome and severe pre-eclampsia. Distinguishing these conditions requires blood pressure monitoring, urine protein testing and dengue-specific tests, which is why obstetric assessment is essential.

How Do Doctors Diagnose Dengue in Pregnant Women?

Evaluation includes clinical examination and laboratory testing:

• NS1 antigen during the first five days
• IgM and IgG antibodies after about day five
• Complete blood count and serial haematocrit, interpreted against pregnancy-adjusted baselines
• Liver function tests, kidney function and coagulation profile
• Urine protein and blood pressure to exclude pre-eclampsia
• Tests for malaria, typhoid and urinary infection where relevant

Foetal wellbeing is monitored with foetal heart rate assessment, CTG in later pregnancy and ultrasound as needed.

How Is Dengue Managed During Pregnancy?

Treatment is supportive, as no specific antiviral exists.

• Fever and pain: Paracetamol is the preferred medicine. NSAIDs are avoided because of bleeding risk and their known effects in later pregnancy.
• Fluid therapy: Oral fluids are encouraged. IV fluids, when needed, are given cautiously and adjusted frequently, since pregnant women are more prone to pulmonary oedema from fluid overload.
• Positioning: Lying on the left side in later pregnancy helps prevent compression of major blood vessels by the uterus.
• Monitoring: Vital signs, urine output, haematocrit and platelets are checked regularly, along with foetal heart rate.
• Delivery planning: Where possible, obstetricians avoid elective induction or caesarean section during the critical phase. If delivery cannot be delayed, blood products are arranged in advance.
• Blood products: Platelets or other components may be given for active bleeding or before unavoidable delivery with very low counts.

Newborns of mothers infected near term are observed for fever, low platelets and poor feeding during the first week or two.

When Should a Pregnant Woman with Dengue Visit a Hospital?

Many obstetric guidelines favour hospital assessment for all pregnant women with suspected dengue. Admission is usually recommended for any warning sign, vaginal bleeding, reduced foetal movements, significant thrombocytopenia, signs of labour or ruptured membranes, or an inability to maintain oral intake.

Women seeking the best hospital for dengue in pregnancy in Jaipur should consider a centre offering obstetric, medical, blood bank and neonatal services together, since dengue near term may affect both mother and newborn.

When Should You Contact Your Doctor?

Contact your obstetrician on the first day of any fever during pregnancy. Avoid self-medication with painkillers, antibiotics or herbal preparations before medical review.

How Can Pregnant Women Prevent Dengue and Recover Safely?

Mosquito bite prevention remains the most reliable protection. Wear loose, long-sleeved clothing, use a repellent confirmed as pregnancy-safe by your doctor, sleep under a net, including during daytime rest, fit window screens and remove stagnant water around the home weekly.

After recovery, fatigue may persist for several weeks. Continue antenatal visits, iron and folic acid supplementation, and any growth scans your obstetrician recommends.

Conclusion

Dengue in pregnancy calls for early testing, careful fluid management and close observation of both mother and baby. Most women recover fully when care begins promptly. If you are concerned about dengue during pregnancy, consult your obstetrician at the first sign of fever and follow their monitoring plan. Maternite Hospitals offers high-risk pregnancy care with neonatal support for mothers and newborns who need it.