Top 7 Essential Facts About Zika Virus and How to Prevent It

The Zika Virus is primarily transmitted to humans through the bites of infected mosquitoes, namely Aedes aegypti and Aedes albopictus. Pregnant women can also pass the virus to their unborn child or during childbirth. While typically mild and not widespread, Zika can lead to severe complications that pose a threat to public health. According to the US Centers for Disease Control and Prevention (CDC), the Zika virus is known to cause microcephaly in infants if the mother contracts the virus during pregnancy. Microcephaly is a birth defect characterized by an abnormally small head size compared to others of the same age and sex.

This condition can lead to delays in neurological development, speech, motor skills, and growth. Additionally, Zika may result in other disabilities in newborns, such as eye problems, hearing loss, and developmental delays. Furthermore, the virus can cause Guillain-Barré Syndrome, a neurological disorder that can lead to paralysis. This occurs when the body's immune system attacks parts of the nervous system, causing muscle weakness and nerve paralysis. This is why the World Health Organization considers Zika a public health concern not because of how fast it spreads, but due to its dangerous complications.

For pregnant women, the period when the virus poses the highest risk is during the first trimester, which is often before the woman realizes she is pregnant. However, experts are still uncertain about how the virus crosses the placenta and damages the fetus's brain. As for newborns, they should be tested for the Zika virus if the mother has visited or lived in any country currently experiencing an outbreak. This is because infection with the virus can lead to vision and hearing impairments, along with other abnormalities, even without microcephaly. These abnormalities require thorough testing and evaluation.

This recommendation is currently applied to newborns whose mothers show symptoms of the virus—such as rashes, joint pain, red eyes, or fever—while living in or within two weeks of traveling to affected areas. There is currently no specific treatment or vaccine for the Zika virus. Therefore, health experts advise pregnant women to avoid areas with outbreaks. Women who suspect they are pregnant should consult a doctor before traveling to such areas. For travelers or workers in affected regions, it is crucial to minimize the risk of mosquito bites by staying in air-conditioned rooms with mosquito nets, sleeping under mosquito nets, using insect repellent at all times, and wearing long pants, long-sleeved shirts, hats, and closed shoes.

The first and most important preventive measure is to minimize travel to areas with ongoing Zika outbreaks. Those living in or traveling to affected regions should actively monitor their health. If symptoms develop, they should seek medical attention immediately. It is recommended to use condoms during sexual activity or abstain from sex for at least 28 days to prevent sexual transmission of the virus. Since Zika is primarily spread by mosquito bites, the best way to prevent infection is by avoiding mosquito exposure. Taking measures to protect yourself from mosquito bites is key in combating this disease.

Effective mosquito bite prevention measures include wearing long, covered clothing in light colors as mosquitoes are attracted to dark colors. Avoid using scented cosmetics, apply mosquito repellent, and use mosquito nets when sleeping. Keep children away from damp areas, kill mosquitoes, and spray insecticides as directed. Eliminate mosquito breeding grounds by covering water containers, introducing fish to eat larvae, clearing debris, and flipping over items that collect water. Change the water in flower vases regularly and remove any stagnant water from containers like cans or tires.

Currently, there is no specific medication to treat Zika virus infection. The symptoms of the disease are generally mild, so patients mainly require rest, hydration, and supportive care. Special caution should be exercised when using aspirin or corticosteroids until dengue fever is ruled out. Pay attention to symptoms such as muscle weakness or paralysis after illness in order to detect and address the Guillain-Barré syndrome if present.

If you notice any signs or symptoms, it is advisable to consult a doctor, as individual conditions vary. Therefore, seek medical advice to choose the most suitable treatment plan. Some at-home remedies to ease symptoms include plenty of rest, drinking water to stay hydrated, and using pain relievers such as paracetamol or ibuprofen to reduce fever and discomfort. Never take aspirin or nonsteroidal anti-inflammatory drugs (NSAIDs) without a doctor’s recommendation.

According to some experts, symptoms of Zika virus infection are similar to those of dengue fever. However, Zika-related fever tends to be mild, usually not exceeding 38°C. In most cases, individuals infected with the virus recover within 7 to 12 days, with symptoms improving over time. However, in more severe instances, patients may require hospitalization due to neurological disorders or autoimmune conditions associated with the infection.

Some patients infected with the Zika virus may not show any clinical symptoms, but medical professionals recommend paying attention to the most common signs of the disease, such as mild fever ranging from 37.8°C to 38.5°C, fatigue, rash, and joint pain in the hands and feet. Other symptoms may include conjunctivitis, muscle pain, headaches, eye socket pain, and general weakness. A few patients might also experience nausea, abdominal pain, diarrhea, mucosal ulcers, or itching.

Zika virus was first discovered in a monkey in Uganda in 1947, and its name is derived from the Zika Forest, where it was initially identified. The virus primarily spreads to humans through mosquito bites. Mosquitoes transmit the virus by feeding on the blood of infected individuals and then transferring the virus to healthy individuals. The main mosquito responsible for spreading Zika is the Aedes mosquito, specifically Aedes aegypti (the yellow fever mosquito), which is also a carrier of dengue fever, Chikungunya, and yellow fever. After an infected mosquito feeds on a person or animal, the virus multiplies in the mosquito's body and incubates for about 10 days before it can be passed on to others through subsequent bites. Infected mosquitoes can also pass the virus on to their offspring.

Mother-to-child transmission: Pregnant women can pass the Zika virus to their unborn child. There have been no reports of Zika being transmitted through breast milk, and the World Health Organization continues to recommend that women breastfeed exclusively for the first six months. Sexual transmission: The Zika virus has been found in semen, and studies suggest that it can be transmitted through unprotected sexual contact. Infected individuals may pass the virus on before, during, and after symptoms appear. Blood transmission: Zika has also been detected in the blood of infected patients. Although transmission through blood transfusions is theoretically possible, there have been no reported cases of this so far.

Most people infected with Zika virus experience mild or no symptoms at all, such as a slight fever between 37.8°C to 38.5°C, headache, rash, itching, and fatigue. Some may also develop conjunctivitis and joint pain, often in the smaller joints of the hands and feet. Pregnant women infected with Zika experience similar symptoms to those seen in the general population. As there is no specific treatment for the disease, affected individuals are advised to rest, stay hydrated, and take pain relievers such as paracetamol for fever reduction. Symptoms generally resolve within 2 to 7 days.

Zika virus can be transmitted from mother to fetus, with the highest risk of transmission occurring during the first trimester of pregnancy. While the virus has minimal impact on the health of the mother, it can cause severe birth defects in the baby. The most concerning of these defects is microcephaly (a condition where the baby’s head is abnormally small). This condition affects between 1-10% of babies born to women who contracted Zika virus during the first trimester. There is currently no specific treatment for microcephaly. Babies diagnosed with this condition will require close monitoring during their early years. Regular brain imaging scans will be performed to assess brain development, and surgical procedures may be considered if there is further brain growth. Physical therapy will also be necessary to improve the child’s quality of life.