A Sydney woman has posted a confronting video online of her baby choking and struggling to breathe during a whooping cough episode, in an attempt to educate parents to vaccinate their children.
Sandra Tee posted the video on her Facebook page on Monday to show what happens when babies are not vaccinated (or in her case, too young to be vaccinated), urging parents not to "ignore the warning signs".
"This video may distress some people but I'm sharing to show just how scary and dangerous whooping cough is to babies who are too young to be vaccinated," Tee wrote.
"Babies rely on herd immunity to keep them safe and unfortunately we cannot achieve that without high vaccination rates."
The 5-week-old is administered oxygen in a hospital bed but -- as Tee warns -- often babies with whooping cough do not make a sound when they lose breath, so it can easily be fatal if they're not closely monitored.
"If we weren't in hospital and sitting watching our baby 24/7 the outcome would be fatal. Please don't ignore the warning signs -- our baby girl only had a slight cough to start," Tee wrote.
"Please share this to educate more people on the importance of vaccinations."