Every year, May 16 is National Dengue Day, a public health initiative that aims to bring attention to one of the globe's most rapidly spreading mosquito-borne viral diseases. But as the limelight is once again back on dengue prevention and control, a new study is changing the conversation from the short-term risk of dengue to the insidious, long-term damage it can inflict on the future generation.A recent study published has highlighted an underemphasized but very important issue of maternal health: the long-term effect of dengue fever in pregnancy on newborns. Although dengue fever is a well-documented mosquito-transmitted disease endemic to tropical and subtropical parts of the world, the novel evidence points toward its long-lasting effects on pregnancy outcomes and children's health till the age of three years.As the world fights rising dengue epidemics fueled in part by climate change and urbanization—knowing how this virus impacts pregnant women and their unborn babies is more critical than ever.Dengue fever infects almost half of the world's population. In 2023 alone, over three million cases were reported in the Americas, triggering alarms over its explosive growth. Notwithstanding its ubiquity, risks of dengue fever in pregnancy have not been given sufficient attentionuntil now.Scientists from the UK's Universities of Birmingham and Surrey, employing a huge data set from Brazil's Minas Gerais state, have presented a strong argument for the long-term effect of the virus. The study, published in the American Economic Journal: Applied Economics, points out how even uncomplicated dengue infection in pregnancy has significantly affected the course of a child's life.The research followed more than 300,000 mother-child pairs from 2011 to 2017. Researchers matched birth certificates, hospitalization rates, and reports of dengue infection to determine how maternal infection influenced early childhood health outcomes.The study’s findings draw a sharp line between maternal dengue infection and significant early-life health risks for children. Researchers discovered that children born to mothers who contracted dengue during pregnancy faced a 27% higher risk of hospitalization from birth to age three. Alarmingly, this risk peaked in the second year of life, with a 76% increase in hospitalization during that period alone — a stage critical for early development. In addition to hospitalization risks, birth weight outcomes were notably affected. Babies born to infected mothers were 15% more likely to have low birth weight, with more severe outcomes indicating a 67% higher chance of very low birth weight and a staggering 133% increased risk of extremely low birth weight. These outcomes are medically significant, as birth weight is a well-established predictor of both immediate neonatal health and long-term developmental and socioeconomic trajectories.These staggering statistics highlight not only the immediate health consequences for newborns but also the possibility of long-term developmental and socio-economic issues.Why Low Birth Weight Is A Sign Of Something Serious?Low birth weight is a documented risk factor for many health complications throughout an individual's lifetime. Underweight babies are at higher risk of:Delayed physical and intellectual developmentIncreased susceptibility to infections and chronic diseasesGreater risk of metabolic disorders in adulthoodDr. Livia Menezes, co-author of the University of Birmingham study, underscored this association, adding, "These birth outcomes can have longer-term impacts—for example, previous research has shown that low birth weight can negatively affect socio-economic outcomes and health in adulthood."Dengue Transmission and Symptoms During PregnancyDengue fever is due to the dengue virus and spread by the bite of an infected Aedes mosquito, predominantly Aedes aegypti. Pregnant women, particularly in the third trimester, are highly susceptible as they can vertically transmit the virus to their fetus.The signs of dengue fever during pregnancy vary from mild to severe and can include:FeverHeadache and orbital painNausea and vomitingRash, particularly on palms and solesMuscle and joint acheEnlarged glandsSevere dengue (dengue hemorrhagic fever) may cause internal bleeding, organ failure, and death when left untreated. Warning signs of severe dengue are persistent vomiting, severe stomach pain, bleeding gums, and inability to breathe.Historically limited to the tropics, dengue fever is increasingly spreading thanks to global warming. Increasing temperatures and urbanisation have enabled the Aedes mosquito to flourish in southern Europe and even US states.As economist and co-author Dr. Martin Foureaux Koppensteiner of the University of Surrey describes, the consequences extend beyond personal health: "These adverse birth outcomes… have a much broader effect on communities where dengue is endemic. Hospitalization and long-term health problems caused by maternal infection all cost something—one that might be avoided or at least reduced with greater awareness and better policy."Furthermore, healthcare systems need to plan for long-term pediatric care in children who were exposed to dengue in utero. These include monitoring for birth weights, developmental milestones, and providing access to early interventions when necessary.These research findings present the global health community with a urgent wake-up call. Dengue fever is no mere seasonal plague—it is an interrupter of a child's life from an early age. With its spread and underemphasized consequences, especially among pregnant women, dengue needs to gain a greater space on the agenda of maternal health.