Top 8 Mosquito-Borne Diseases That Pose a Threat to Children

In recent years, the Zika virus has caused panic in many countries after evidence linked it to microcephaly (small head syndrome) in newborns. This disease is transmitted by the Aedes aegypti mosquito and can be passed from mother to fetus, leading to brain damage in children.

Many children infected with Zika develop Guillain-Barré syndrome, a disorder where the immune system mistakenly attacks parts of the peripheral nervous system. This complication can damage brain cells and result in paralysis. Reports suggest that Zika infection increases the risk of Guillain-Barré syndrome by up to five times.

• Symptoms to watch for:

Typical symptoms of Zika infection include fever, rash, joint pain, and red eyes. These symptoms are generally mild and last less than a week, which is why they are often overlooked.

• What parents should do:

If you contract Zika while pregnant, try not to panic, as the risk of your child developing microcephaly is not high. Seek medical advice and strictly follow your doctor's guidance.

The virus that causes Japanese encephalitis resides in hosts like birds and pigs. Mosquitoes that feed on infected animals can transmit the disease to humans through their bites. These mosquitoes are typically found in areas with stagnant water, marshes, rice fields, and other wetland regions.

The virus can infect the brain and cause severe brain damage. This not only hampers a child's development but can also be fatal, with a mortality rate of about 25 – 30% of those infected.

• Recognizable symptoms:

Japanese encephalitis typically begins with flu-like symptoms such as fever, headache, high fever, convulsions, unconsciousness, and severe headaches.

• What parents should do:

If you live in an area with a high risk of this disease and your child shows symptoms like fever or headache, it’s important to seek medical attention promptly for accurate diagnosis and timely treatment.

Currently, there is no specific treatment for Japanese encephalitis. Therefore, the best approach is to ensure your child receives the Japanese encephalitis vaccine and avoid mosquito bites.

Elephantiasis occurs when the lymphatic system is blocked, causing lymph fluid to accumulate. This leads to the thickening and possible inflammation of the skin and tissue in the affected areas.

The disease is caused by the infection of parasitic filarial larvae transmitted through mosquito bites. After entering the body, the larvae reside in the lymphatic system, where they develop into worms, obstructing lymph flow and causing swelling in areas like the face, arms, and legs. This deformation can be permanent and result in serious cosmetic damage.

Individuals with elephantiasis may suffer from complications such as chyluria (lymph in the urine) and kidney damage.

• Recognizable Symptoms:

Infected individuals typically experience swelling in the legs or arms, which is firm to the touch and does not indent when pressed. The affected skin becomes hardened and thick. The genital area may also swell, causing fluid buildup in the scrotum and resulting in hardened, lumpy skin.

• What Parents Should Do:

If your child is diagnosed with filariasis, follow these steps to manage the condition:

1. Ensure daily hygiene by washing the affected skin areas with soap.
2. Apply prescribed antibiotics or ointments to the affected skin as directed by the doctor.
3. Encourage your child to move the affected limbs to help with lymphatic circulation and reduce swelling.

Children who have contracted Chikungunya may experience depression. The effects of this depression can last for up to a year after the infection. This is one of the major concerns regarding Chikungunya, as it is a mosquito-borne disease.

• Recognizable Symptoms:

Chikungunya fever in children is often accompanied by symptoms such as high fever, joint pain, muscle aches, headaches, nausea, fatigue, and skin rashes. These symptoms typically appear 4 to 8 days after being bitten by an infected mosquito.

Some of these symptoms overlap with those of dengue fever and Zika, which can lead to misdiagnosis in areas where these diseases are prevalent.

• What Parents Should Do:

If your child has had Chikungunya and frequently complains of mood swings or you notice consistent changes in their mood, it is important to consult with a doctor.

Additionally, children who have recovered from Chikungunya may experience joint pain, so parents should pay attention to this condition as well.

Rift Valley Fever is caused by a phlebovirus. This virus is present in livestock such as cattle, buffalo, goats, and sheep, and can be transmitted to humans through mosquito bites or by coming into contact with the blood of infected animals. Additionally, humans can contract the virus by inhaling air around slaughtered infected animals or drinking raw milk from infected livestock.

Various mosquito species, including Aedes, Anopheles, Eretmapodites, and Mansonia, can act as vectors. As such, areas where these mosquitoes are prevalent are at risk for an outbreak of the disease. People who contract Rift Valley Fever may face severe complications, such as blindness, brain infections, liver necrosis, liver enlargement with hemorrhagic spots, swollen lymph nodes, jaundice, or even death.

• Symptoms to Look For:

The incubation period for Rift Valley Fever is typically between 2 and 6 days. The disease starts with flu-like symptoms such as sudden fever, headaches, muscle pain, and back pain. Other symptoms may include neck stiffness, light sensitivity, and vomiting. These signs can sometimes be mistaken for meningitis. Symptoms usually resolve within 4 to 7 days.

• What Parents Should Do:

If you live in an area where these mosquito species are found, stay vigilant. If your child develops a fever, seek medical attention promptly for a proper diagnosis and treatment.

Malaria is one of the most common diseases transmitted by mosquitoes, with the Anopheles mosquito serving as the primary vector. Most children who suffer from mild or moderate malaria recover fully without any long-term effects. However, in severe cases, malaria can have lasting impacts on a child's immune system, cognitive abilities, behavior, and learning potential.

This is because the malaria parasite can infiltrate the immune system, weakening its ability to activate immune responses. Consequently, individuals who have had malaria may have a reduced response to various vaccines and are more susceptible to infections. In the early years of life, children are exposed to many new stimuli such as bacteria, viruses, and fungi. If their immune system is not strong enough, the risk of further illnesses increases.

According to a research paper, the decline in cognitive functions such as language skills, memory, and attention is a potential long-term burden of malaria.

• Symptoms to Recognize:

When a child first contracts malaria, they may experience symptoms such as fever, chills, sweating, muscle aches, and frequent nausea and vomiting.

• What Parents Should Do:

If your child has malaria, be on the lookout for warning signs like seizures, unconsciousness, and low blood sugar. These symptoms indicate the potential for a severe infection and should be addressed immediately.

If your child has had malaria in the past and frequently falls ill, consult a pediatrician to discuss possible immune system suppression.

Additionally, ensure your child eats immune-boosting foods such as citrus fruits, yogurt, almonds, and leafy greens.

Dengue fever in children can have lasting effects on physical development, even after the disease has passed. It is known for causing severe pain in the muscles and joints, often referred to as myalgia and polyarthritis.

If a child with dengue fever also has a deficiency in vitamins or minerals, the intensity of these pains may be more severe than in healthy children.

• Symptoms to Recognize:

When infected with dengue, children typically show signs such as high fever, rashes, headaches, bleeding gums, and easy bruising. In more severe cases, symptoms may include abdominal pain, bloody diarrhea, or skin hemorrhages.

• What Parents Should Do:

If your child has recovered from dengue fever but continues to complain of joint pain, take them back for a follow-up consultation as soon as possible. Doctors will examine the child and assess the pain, prescribe appropriate medication, and advise on dietary changes to help alleviate discomfort.

Yellow fever is a variant of dengue fever that currently has no known cure. Most people recover after being infected, but around 15% of cases develop serious complications such as poisoning, internal bleeding, and organ dysfunction. Unfortunately, the majority of those who experience complications will not survive.

The Aedes aegypti mosquito is the primary vector for the disease. Recently, the number of yellow fever cases has been rising due to factors like declining human immunity and climate change, which expands the mosquito's living environment.

• Recognizing the Symptoms:

Some individuals infected with yellow fever may not show symptoms immediately, while others will start experiencing early signs 3 to 6 days after being bitten by an infected mosquito. These initial symptoms can include a sudden high fever, headaches, muscle pain (especially in the back and knees), light sensitivity, loss of appetite, and redness in the eyes, face, or tongue.

As the disease progresses, patients may develop jaundice, internal bleeding, liver and kidney failure, brain dysfunction, and in severe cases, death.

• What Parents Should Do:

A vaccine for yellow fever is available, and children can be vaccinated starting at 9 months of age. The vaccine should be administered every 10 years for those at high risk of infection.