The vaccine coverage needed for herd immunity varies from disease to disease.
When a certain percentage of a population has been vaccinated, it prevents an infectious disease from spreading. But that threshold depends on the disease.
Several parents do not want their children vaccinated, for religious or other reasons.
Measles cases in the US have reached their highest in 25 years. A bioethicist argues why parents opposed to vaccination are not just wrong about the science, but about the morals.
Many parents object to vaccination for religious reasons, while others may file for exemptions for convenience.
Recent measles outbreaks show the dangers of not vaccinating – and the importance of vaccination. Is there a way to accommodate those religiously opposed to vaccination and minimize other exemptions?
Vaccine work because they help create herd immunity.
Billboards spreading misinformation on the risks of vaccination have popped up around American cities. A bioethicist explains why decisions not to vaccinate children are indefensible.
The flu shot decrease the risk of heart attacks in healthy individuals, according to research. Here, pipettes containing immune cells for testing against possible flu vaccines are seen at the National Institutes of Health in Bethesda, Md., in 2017.
(AP Photo/Carolyn Kaster)
Your risk of a heart attack increases 600 per cent within a week of catching the flu. The flu shot decreases that risk, whether you catch the flu or not.
Everyone has to be vaccinated for immunisation programs to work.
Stating a majority of people won't benefit from a vaccine ignores the purpose of immunisation programs.
Young children catch and spread the flu more than any other age group.
The flu vaccine isn't perfect but it's the best way to protect against these potentially harmful viruses. Most children aged six months to five years are eligible for a free vaccine in 2018.
A recent study of medical students and residents found they were reluctant to engage with parents who have vaccination fears. But listening to parents is important.
A recent study suggests that shunning parents who are reluctant to vaccinate their kids isn't the best strategy. A better strategy might be old-fashioned, but it works.
We can't keep blaming the MMR-autism scare – there are other forces at play.
A new mathematical model has predicted Zika will soon stop spreading due to mass immunity.
During a disease outbreak, lots of people can become infected in a short time and develop immunity, making it hard for the pathogen to spread.
Parents are sensitive to what they hear about vaccines.
Kevin T. Quinn/Flickr
Overall rates of vaccine objection have remained largely unchanged since 2001.
Protecting the herd means a certain proportion of the population has to be immunised.
When a high proportion of a community is immune it becomes hard for diseases to spread from person to person – a phenomenon known as herd immunity.
Why the low uptake?
If people are avoiding the flu jab because last year's protection wasn't great, that would be a mistake.
The emotional appeals of the opposing views on vaccination are both driven by concern for children.
World Bank Photo Collection/Flickr
The plan to withhold payments of child-care and family tax benefits for unvaccinated children could cost non-compliant parents up to A$15,000 a year. But is it ethical to punish parents?
Armed conflict remains the major obstacle to ridding the world of this devastating disease.
James Gordon, Los Angeles.
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Chiropractors may be good at what they do but immunisation is not their field.
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