On June 19, 2025, two cases of the Zika virus were confirmed in Woodlands, specifically on Street 11 and Street 32. The National Environment Agency (NEA) has indicated that enhanced surveillance in the area has detected persistent signals of the Zika virus, suggesting ongoing transmission risks. The presence of the virus has been confirmed in wastewater and mosquito samples collected from the vicinity of the reported cases.
As of June 18, there are currently no designated Zika clusters in Singapore, but the situation warrants public awareness and precautionary measures.
Understanding Zika: Transmission and Symptoms
Zika is primarily transmitted through the bite of infected Aedes mosquitoes, which are also responsible for spreading dengue and chikungunya viruses. Additionally, the virus can be transmitted through sexual contact, blood transfusions, and from mother to child during pregnancy.
Symptoms of Zika infection often mirror those of dengue fever, making it crucial to differentiate between the two through virological tests. Approximately 20% of individuals infected with Zika exhibit symptoms, which typically include fever, rash, headache, joint and muscle pain, and conjunctivitis (red eyes). Symptoms generally manifest between three to twelve days after being bitten by an infected mosquito and can last from four to seven days. Nausea and vomiting may also occur.
Risks for Pregnant Women and Preventative Measures
Pregnant women are particularly vulnerable to the effects of the Zika virus, as infection during pregnancy can lead to severe birth defects in the unborn child. Between 1% and 10% of women infected during pregnancy may give birth to babies with congenital issues, the most notable being microcephaly, characterised by an abnormally small head and potential developmental problems. Other possible defects include difficulties with swallowing, hearing loss, vision problems, and seizures.
Currently, there is no cure for Zika, but symptomatic treatment is available. To reduce the risk of infection, individuals are advised to use mosquito repellent, wear protective clothing, and eliminate stagnant water around their homes to prevent mosquito breeding. Sleeping under mosquito nets and ensuring that living spaces are fitted with wire-mesh screens can also help keep mosquitoes at bay.
Conclusion
With the recent confirmation of Zika cases in Woodlands, it is imperative for residents to remain vigilant and take necessary precautions to protect themselves and their families. Pregnant women, in particular, should be aware of the risks associated with Zika and consult healthcare professionals if they suspect exposure. Public health authorities continue to monitor the situation closely, and community cooperation is essential in preventing the spread of this virus.