June 7, 2019

Kids are more vulnerable to the flu – here’s what to look out for this winter. Children are more likely than adults to catch and spread influenza.

 

Christopher Blyth, University of Western Australia; Kristine Macartney, University of Sydney, and Samantha Carlson, University of Sydney

A ten-year-old Perth boy is the latest Australian child to die from suspected influenza so far this year. This follows the deaths of three Victorian children, and a teenager in South Australia.

Influenza-associated deaths in childhood are uncommon. Despite this, influenza is the most common cause of vaccine-preventable death – more common than meningococcal disease or pertussis (whooping cough).

On average, between five and ten Australian children are reported to die from influenza each year. Tragically, many flu deaths occur in previously healthy children.

These deaths can frequently be prevented through vaccination: analysis by Australian researchers determined that of the children who died from influenza in New South Wales in the ten years to 2014, none were vaccinated.


Read more:
Thinking about getting your child the flu vaccine? Here’s what you need to know


More cases and greater harms

Influenza virus is predominantly spread in droplets created when people with flu cough and sneeze. The virus can also live on objects touched by those with flu, picked up by the hands of others.

Children are more likely to catch and spread influenza: they have large volumes of virus in their nasal secretions and, after infection, shed this for days. They also have poorer hygiene practices, often coughing and spluttering over those closest to them.

For many young children with flu, it is the first time they are exposed to the virus. Their immune system is naïve to influenza and therefore responds more slowly to the infection. This means the influenza virus can cause significant ill-effects before the immune system can bring it under control.


Read more:
Flu vaccine won’t definitely stop you from getting the flu, but it’s more important than you think


Thousands of children who contract the flu are hospitalised every year; hospitalisation rates in children are much greater than in older people. Children younger than five years are the age group most likely to be hospitalised.

Although children with underlying medical conditions including chronic disorders of the heart, lungs, nervous and immune system are most susceptible, more than half of children admitted to hospital each year are healthy.

What should you look out for?

Influenza most commonly causes fever, cough, headache, a sore throat and a runny nose. The virus can also infect the lungs, causing pneumonia.

Some children react to the infection by developing vomiting, diarrhoea and muscle aches and pains.

Many parents aren’t aware that influenza can also cause damage to the brain, heart, kidneys and muscles. It is unclear why these complications occur in some children and not others, but they can be severe.

Young children get frequent infections and often develop symptoms that are difficult to distinguish from influenza. Testing on a nose or throat swab can be done to confirm if the illness is caused by influenza virus.

Parents should seek medical attention if their child:

  • has difficulty breathing (breathing rapidly or drawing in chest or neck muscles)
  • is vomiting and refusing to drink
  • is more sleepy than normal
  • has pain that doesn’t get better with simple pain relief medication.

Most importantly, if you’re worried about your child during the flu season, see a doctor.



Vaccination is the most effective way to protect your child against the flu.
From shutterstock.com

How does this year’s season compare?

Australia has had an unusual start to the 2019 influenza season, with higher numbers of cases during the warmer months than expected.

The number of cases of influenza diagnosed each week is currently greater than in 2017 and in the 2009 swine flu pandemic.

In 2017, Australia experienced its worst influenza season on record. More than 220,000 Australians were diagnosed with influenza, with health-care services and hospitals inundated with children, adults and the elderly suffering the effects of influenza.


Read more:
Here’s why the 2017 flu season was so bad


The stories of healthy young people succumbing to flu were particularly heartbreaking.

Although it is never possible to predict what will happen in coming months, a number of measures point to a larger than average influenza season in 2019.

How can I protect my children?

Vaccination is recommended for all Australians from six months of age.

It’s free for all children aged from six months to under five years, those with certain medical risk factors including severe asthma and chronic heart, respiratory, neurological and immune conditions, all Aboriginal and/or Torres Strait Islander people, pregnant women, and people aged 65 years and over.

Those too young to be vaccinated (children five months and younger) are protected by their mothers being vaccinated during pregnancy.

You can get your family vaccinated at your local general practice, council or community health clinic, or Aboriginal Medical Service.

If you or your child are not eligible for a free flu vaccine, the usual vaccine cost is around A$20.

As the virus is constantly changing, the effectiveness of the vaccine can vary each year. Australian research has shown that the risk of flu is reduced, on average, by 50-60% in children who receive the vaccine.

This can mean that some children who get vaccinated will unfortunately still get the flu. However, some evidence suggests the disease will be milder if you catch it and have been vaccinated.

It’s not possible to predict who will catch the flu or develop complications, but vaccination remains the most effective and safest tool to protect children against influenza.


Read more:
Should I get the flu shot if I’m pregnant?


Childhood flu vaccination programs have an added bonus of reducing flu in others in the community who are not vaccinated by reducing the spread of the virus. This is called “herd” or “community” immunity and particularly helps protect vulnerable people who may be at risk of becoming seriously ill with the flu.The Conversation

Christopher Blyth, Paediatrician, Infectious Diseases Physician and Clinical Microbiologist, University of Western Australia; Kristine Macartney, Professor, Discipline of Paediatrics and Child Health, University of Sydney, and Samantha Carlson, PhD Candidate, School of Public Health, University of Sydney

This article is republished from The Conversation under a Creative Commons license. Read the original article.


  • Great tip and advice on what to do if my child gets the flu.

    Reply


  • I’m scared now reading that about influenza, brain damage etc?! My kids have been getting colds in the last month or so which have gotten better but the cough lingers for ages. The GP said it’s normal and can last around 4 weeks.

    Reply


  • Influenza is terrible and parents need to do what is most suitable for the protection of their children.

    Reply


  • Gresst article and very timely to protect the whole family

    Reply


  • In April there had been over 10,000 cases of flu reported in Aust. and there had been deaths by then too. For some people high temperature can trigger a seizure even if they have no prior medical history of them. Some children refuse to drink if they have a sore throat – including tonsillitis – it is still wise to check if it is flu at this time of year.

    Reply


  • The flu strain circulating at the moment is really quite severe. I have several friends who couldn’t walk and couldn’t eat for 5 days ! Luckily it didn’t hit us yet.

    Reply


  • Thankfully we haven’t had any sickness this year

    Reply


  • Still don’t understand why many dont choose to vaccinate when it helps reduce the flu and prevent kids being more sick ‘


    • I can understand that those under the vulnerable group choose to get the flue vaccination (so on indication), but when you’re healthy and strong this shouldn’t be necessary and it is actually good for your body to go through the process of building up immunity by itself.

    Reply


  • It seems so many people are really ill this year. More than ever before that I can recall.

    Reply


  • We’ve had a cold go through the house for the last 3 weeks. Had hubby in hospital last night as he now has the flu, which aggravated his asthma


    • Oh dear, glad he is in good hands. Hope he recovers soon.

    Reply


  • Mine hve had colds but that’s it so far thank goodness.

    Reply


  • We’re all vaccinated, but it’s still good to know what to look for.

    Reply


  • So many people have had a flu shot this year. I hope this helps to curb the flu outbreak.


    • I hope it assists keep numbers down too.

    Reply

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