• Published on: Jul 09, 2021
  • 4 minute read
  • By: Dr Rajan Choudhary

Important Questions About Zika Virus Answered

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Important Questions About Zika Virus Answered

Q: What is Zika?

A: Zika virus disease is caused by the Zika virus, which is spread to people primarily through the bite of an infected mosquito (Aedes aegypti and Aedes albopictus). The illness is usually mild with symptoms lasting up to a week, and many people do not have symptoms or will have only mild symptoms. However, Zika virus infection during pregnancy can cause a serious birth defect called microcephaly and other severe brain defects.

Q: How do people get infected with Zika?

A: Zika is spread to people primarily through the bite of an infected Aedes species mosquito (Aedes aegypti and Aedes albopictus). A pregnant woman can pass Zika to her fetus during pregnancy or around the time of birth. Also, a person with Zika can pass it to his or her sex partners. We encourage people who have traveled to or live in places with risk of Zika to protect themselves by preventing mosquito bites and sexual transmission of Zika.

Q: What health problems can result from getting Zika?

A: Many people infected with Zika will have no symptoms or mild symptoms that last several days to a week. However, Zika infection during pregnancy can cause a serious birth defect called microcephaly and other severe fetal brain defects. Current research suggests that Guillain-Barre syndrome (GBS), an uncommon sickness of the nervous system, is strongly associated with Zika; however, only a small proportion of people with recent Zika virus infection get GBS.

Once someone has been infected with Zika, it’s very likely they’ll be protected from future infections. There is no evidence that past Zika infection poses an increased risk of birth defects in future pregnancies.

Q: Should pregnant women travel to areas with a risk of Zika?

A: Pregnant women should NOT travel to areas with Zika outbreaks. Before traveling to other areas with the current or past spread of Zika, pregnant women should discuss their travel plans with a doctor. Travelers who go to places with outbreaks or past or current spread can be infected with Zika. Zika infection during pregnancy can cause microcephaly and other severe brain defects.

Q: What can people do to prevent Zika?

A: The best way to prevent Zika is to protect yourself and your family from mosquito bites:

Use registered insect repellents  Wear long-sleeved shirts and long pants

Sleep under a mosquito bed net if air-conditioned or screened rooms are not available or if sleeping outdoors.

Zika can be spread by a person infected with Zika to his or her sex partners. Condoms can reduce the chance of getting Zika from sex. Condoms include male and female condoms. To be effective, condoms should be used from start to finish, every time during vaginal, anal, and oral sex and the sharing of sex toys. Not having sex eliminates the risk of getting Zika from sex. Pregnant couples with a partner who traveled to or lives in an area with risk of Zika should use condoms every time they have sex or not have sex during the pregnancy.

Q: What are the symptoms of Zika virus disease?

A: The most common symptoms of Zika virus disease are fever, rash, headache, joint pain, red eyes, and muscle pain. Many people infected with Zika won’t have symptoms or will have mild symptoms, which can last for several days to a week.

Q: How is Zika diagnosed?

A: To diagnose Zika, your doctor will ask you about recent travel and symptoms you may have and collect blood or urine to test for Zika or similar viruses.

Q: Can someone who returned from an area with a risk of Zika get tested for the virus?

A: Zika virus testing is performed at CDC and some state and territorial health departments. See your doctor if you have Zika symptoms and have recently been in an area with a risk of Zika. Your doctor may order tests to look for Zika or similar viruses like dengue and chikungunya.

Q: What should pregnant women who have recently traveled to an area with a risk of Zika do?

A: Pregnant women who have recently traveled to an area with a risk of Zika should talk to their doctor about their travel, even if they don’t feel sick. Pregnant women should see a doctor if they have any Zika symptoms during their trip or after traveling. All pregnant women can protect themselves by avoiding travel to an area with risk of Zika, preventing mosquito bites, and following recommended precautions against getting Zika through sex.

Q: I am not pregnant, but will my future pregnancies be at risk if I am infected with the Zika virus?

A: Currently, there is no evidence that a woman who has recovered from Zika virus infection (the virus has cleared her body) will have Zika-related pregnancy complications in the future. Based on information about similar infections, once a person has been infected with the Zika virus and has cleared the virus from his or her body, he or she is likely to be protected from future Zika infections.

If you’re thinking about having a baby soon and you or your partner live in or traveled to an area with the risk of Zika, talk with your doctor or another healthcare provider. See Women & Their Partners Trying to Become Pregnant.

Q: How should insect repellents be used on children to prevent mosquito bites and the viruses that some mosquitoes can spread?

A: When using insect repellent on your child always follow label instructions. Do not use products containing oil of lemon eucalyptus (OLE) or para-menthane-diol (PMD) on children under 3 years old. Do not apply insect repellent to a child’s hands, eyes, mouth, cuts, or irritated skin. Adults should spray insect repellent onto their hands and then apply it to a child’s face.

Q: What should I do if I am sick, or a family member is sick, with Zika?

A: Many people infected with the Zika virus won’t have symptoms or will only have mild symptoms lasting several days to a week. If you have symptoms of Zika (fever, rash, headache, joint pain, red eyes, or muscle pain) and you live in or recently traveled to an area with risk of Zika, you should see your doctor or healthcare provider and tell him or her about your symptoms and recent travel. There is no specific medicine for Zika, but you can treat the symptoms. If you are diagnosed with Zika, protect those around you by taking steps to prevent mosquito bites and to prevent sexual transmission of Zika. Because Zika can generally be found in the blood during approximately the first week of infection and can be passed to another person through mosquito bites, help prevent others from getting sick by strictly following steps to prevent mosquito bites during the first week of illness.

Read FAQs


A. No, Zika virus is not spread through casual contact such as shaking hands or sharing food. The primary modes of transmission are through the bite of an infected Aedes mosquito, sexual contact, and from a pregnant mother to her unborn child. Blood transfusion is a rare mode of transmission, but Zika cannot spread through coughing, sneezing, or touching.

A. If you have symptoms like fever, rash, joint pain, red eyes, or headache and have recently traveled to an area with Zika risk, you should consult your healthcare provider. Your doctor may recommend testing to confirm the presence of the virus. While there is no specific treatment for Zika, managing symptoms with rest, fluids, and pain relievers like acetaminophen is advised. Be sure to take precautions to avoid mosquito bites to prevent spreading the virus to others.

A. Couples should take precautions when planning pregnancy after Zika infection. It is recommended that men wait at least six months after symptoms or exposure, and women wait at least two months. This helps minimize the risk of the virus affecting future pregnancies. Always consult your healthcare provider for personalized guidance based on your circumstances

Read Blog
caffeine

Health Problems Linked to Excessive Caffeine Intake: When Too Much Becomes Harmful

Caffeine is one of the most widely consumed stimulants in the world. Found in coffee, tea, energy drinks and many soft drinks, it is often used to improve alertness and combat fatigue. While moderate caffeine consumption can be safe for most people, understanding the health problems linked to excessive caffeine intake is important, especially as daily consumption levels continue to rise in India.

Urban lifestyles, long working hours and increased reliance on energy drinks have made caffeine overconsumption a growing public health concern.

 

How Caffeine Works in the Body

Caffeine stimulates the central nervous system by blocking adenosine, a chemical responsible for promoting sleep and relaxation.

This results in:

  • increased alertness

  • faster heart rate

  • heightened mental activity

However, overstimulation places stress on multiple body systems.

 

What Is Considered Excessive Caffeine Intake?

According to WHO and global health guidelines:

  • up to 400 mg per day is considered safe for most healthy adults

Excessive intake occurs when:

  • multiple caffeinated beverages are consumed daily

  • energy drinks are used frequently

  • caffeine is consumed late in the day

Many people unknowingly exceed safe limits.

 

Nervous System Overstimulation

Excess caffeine overstimulates the brain.

Common symptoms include:

  • restlessness

  • nervousness

  • tremors

  • irritability

Chronic overstimulation can worsen stress and reduce emotional stability.

 

Anxiety and Panic Symptoms

Caffeine increases adrenaline release.

This can:

  • trigger anxiety attacks

  • worsen panic disorder

  • increase feelings of unease

ICMR mental health studies note caffeine as a common trigger for anxiety symptoms in sensitive individuals.

 

Sleep Disruption and Insomnia

Sleep is one of the first systems affected.

Excessive caffeine:

  • delays sleep onset

  • reduces deep sleep

  • shortens total sleep duration

Even caffeine consumed 6–8 hours before bedtime can impair sleep quality.

 

Impact on Heart Health

High caffeine intake affects the cardiovascular system.

Possible effects include:

  • increased heart rate

  • palpitations

  • irregular heart rhythm

People with underlying heart conditions are particularly vulnerable.

 

Blood Pressure Elevation

Caffeine temporarily raises blood pressure.

Chronic excessive intake may:

  • worsen hypertension

  • increase cardiovascular risk

NFHS-5 data highlights rising hypertension prevalence in India, making caffeine moderation important.

 

Digestive System Problems

Caffeine stimulates stomach acid production.

This can cause:

  • acidity

  • heartburn

  • gastritis

  • bloating

People with sensitive digestion may experience symptoms even at lower doses.

 

Dependency and Withdrawal Symptoms

Regular high intake leads to caffeine dependence.

Withdrawal symptoms include:

  • headaches

  • fatigue

  • irritability

  • difficulty concentrating

Dependence reinforces overconsumption cycles.

 

Effect on Bone Health

Excessive caffeine:

  • increases calcium loss through urine

  • may affect bone density over time

This is particularly concerning for older adults and women.

 

Dehydration and Electrolyte Imbalance

Caffeine has a mild diuretic effect.

High intake without adequate hydration may lead to:

  • dehydration

  • muscle cramps

  • fatigue

Hot climates increase this risk.

 

Impact on Blood Sugar and Metabolism

Caffeine affects glucose metabolism.

Excessive intake:

  • worsens insulin sensitivity

  • increases stress hormone release

This may increase diabetes risk when combined with poor lifestyle habits.

 

Energy Drinks and Hidden Risks

Energy drinks often contain:

  • very high caffeine levels

  • added sugar

  • stimulants

Lancet reports associate energy drink overuse with heart rhythm disturbances and metabolic stress.

 

High-Risk Groups

Certain individuals should be especially cautious:

  • people with anxiety disorders

  • those with heart disease

  • pregnant women

  • individuals with sleep disorders

Safe limits may be lower for these groups.

 

Signs You May Be Consuming Too Much Caffeine

Warning signs include:

  • frequent palpitations

  • chronic insomnia

  • persistent anxiety

  • digestive discomfort

  • reliance on caffeine to function

These signals indicate the need for reduction.

 

How to Reduce Caffeine Intake Safely

Effective strategies include:

  • gradual reduction rather than abrupt stopping

  • switching to decaffeinated options

  • avoiding caffeine after mid-afternoon

  • improving sleep and nutrition

Small steps prevent withdrawal symptoms.

 

Healthier Alternatives for Energy

Better ways to improve energy include:

  • adequate sleep

  • balanced meals

  • hydration

  • regular physical activity

These support sustained energy without overstimulation.

 

Role of Preventive Health Awareness

Preventive healthcare focuses on:

  • identifying lifestyle triggers

  • reducing dependency habits

NITI Aayog highlights lifestyle modification as key to non-communicable disease prevention.

 

Long-Term Health Consequences of Ignoring Excess Intake

Chronic caffeine overuse increases risk of:

  • sleep disorders

  • anxiety and mood issues

  • heart rhythm problems

  • digestive disorders

These conditions often develop gradually.

Conclusion

The health problems linked to excessive caffeine intake extend beyond temporary jitters or sleep loss. Chronic overconsumption strains the nervous system, disrupts sleep, affects heart rhythm, worsens anxiety and impacts digestion and metabolism. While caffeine can be enjoyed safely in moderation, recognising personal limits and maintaining balance is essential for long-term health. Listening to early warning signs and adopting healthier energy habits can prevent serious health consequences.

 

References

  • World Health Organization (WHO) – Caffeine Intake and Health Guidelines

  • Indian Council of Medical Research (ICMR) – Nutrition and Mental Health Studies

  • National Family Health Survey (NFHS-5) – Hypertension and Lifestyle Risk Data

  • Lancet – Energy Drinks, Caffeine and Cardiovascular Effects

  • NITI Aayog – Preventive Health and Lifestyle Modification Reports

  • Statista – Caffeine Consumption Trends in India

See all

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