Immune System
Updated on 29 January 2022
Viral infections are caused by viruses, unlike bacterial infections that are caused by bacteria.
There are many different kinds of viruses that can cause a host of infections ranging from mild to severe to life-threatening.
The most common viral is the flu or influenza. But there many other viral infections. Read on to know more about viral infections.
Viral infections are caused by viruses that are very small germs. There are thousands of different viruses that can cause a wide range of infectious diseases and health conditions.
Viruses attack the healthy cells in your body. They use the healthy, living host cell to replicate and multiply. Due to this, the infected host cell cannot perform its usual function. Some viruses kill the host cell, while some alter the way a host cell works. The virus then moves on to other cells, infecting or destroying them the same way. This is what causes you to fall sick.
A healthy immune system can fight off most viral infections, but some viruses can cause serious problems. Viruses can affect specific organs or affect the various body systems. Some of the most common viral infections include:
Viruses spread in many different ways, depending on the type of virus. They may be transmitted by:
Since there are many different kinds of viral infections, the symptoms will probably vary depending on which virus your baby catches. Usually, the first signs of a viral infection are:
Your baby is likely to suffer from quite a few sniffles, rashes and tummy upsets in the initial years while her immune system is still maturing.
It can also be hard to know what's serious and what's not, because your baby can't tell you how she's feeling.
So always consult your doctor if you notice any of these symptoms to rule out any other infection or illness.
Always trust your instincts. If your instinct tells you that your baby is unwell no matter how old she is, you're probably right. If your baby has any other symptom that worries you, play it safe and make the call.
Many viral infections resolve on their own, so no treatment is necessary.
Antibiotics don’t help in viral infections. Medicines are only given to relieve the symptoms of fever, body ache, cold or cough while your baby's immune system fights off the virus. These symptomatic treatments can help your baby feel better.
You will have to wait for the virus to take its course for your baby to feel better, which can be anywhere from three days to a week. During this time, she'll benefit from plenty of rest and fluids.
In most cases, antivirals are not given. Only children who get admitted to hospital, are treated with antivirals. This is usually if they have a medical condition, like heart disease or if they were born prematurely, or if they have any malignancies.
However, antibiotics may be necessary, if your child a secondary or bacterial infection as a result of the viral infection.
Follow the instructions to the letter for giving your child her antibiotic medication. If you stop giving the antibiotic too soon, the bacteria can re-emerge quickly in a more severe form.
In some cases, if your baby develops an aggressive infection, whether viral or bacterial, she may need to get admitted to the hospital for treatment.
A viral infection is usually not serious, and can take between three days to seven days to clear. Get your baby to the doctor straight away if you notice any of these danger signs:
Offer plenty of fluids
Your child will be losing a lot of fluid through the fever, diarrhoea and vomiting. If you're still breastfeeding, let your baby breastfeed as often as she wishes. For babies on formula feeds and on solid foods, water is the best drink.
Older babies on solids can have coconut water, lemonade (nimbu pani), lassi and buttermilk (chhaach). It's best not to give fruit juice to your child until she is at least two years old. Juice is not as healthy for your child as feeding her the fresh fruit itself.
If necessary, your doctor might prescribe some Oral Rehydration Salts (ORS). This solution will give your little one all the nutrients she has lost. You can give it to your baby even if she's just breastfeeding.
Give nutritious food
Breastmilk or formula provides all the nutrition your baby needs if she's under six months.
If your child is older than six months or on solids, offer her soft, easy to digest foods. Soups, lentils (dals), khichdi and porridge, make great choices.
Fruits and vegetables are an important food group and provide vital minerals and vitamins the body needs. So, give your baby plenty of these but as purées or finger foods rather than as juice.
Read more on what to feed a sick child.
Let her rest
Let your child rest in a quiet room. This will help her fight the illness and get stronger. If you can, keep her in a separate room while she recovers. This will also prevent her from spreading the germs to other family members and children in the house.
Lower the fever
If your child has a high fever, you can sponge her body with some lukewarm water. This will refresh her and help bring down her temperature. Read about some non-medical ways to reduce fever.
Viral infections are most common during seasonal changes, so be extra careful during those times of the year. You can also minimise your baby's exposure to germs and boost her defences by:
Both viral and bacterial infections can make you sick. They often have similar symptoms such as fever, chills, body ache and malaise, but some of the main differences are:
Viral infection
Bacterial infection
Sometimes a secondary infection may follow a viral. This may be due to a bacterial infection. If this happens, your doctor is likely to prescribe antibiotics.
In some cases, diagnosing a bacterial or viral infection may not be straightforward. Some illnesses such as diarrhoea, meningitis or pneumonia can be caused by either viruses or bacteria.
Depending on the infection, your doctor will advise urine, blood or stool tests or "culture" tests to identify the infection. In some cases, a swab from your nose or throat may also be taken.
Both viral and bacterial infections can lead to serious illness if left untreated, so you should speak to your doctor at the earliest.
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Written by
Shaveta Gupta
An expert in content marketing, Shaveta is an alumnus of IIT, Bombay, she knows what the audience is looking for. She ha
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