Despite being so small they can't be seen with the naked eye, pathogens that cause human disease have greatly affected the way humans live for centuries.
Here we explore our past and present struggles with four of the most significant infectious diseases human beings have faced, and some of the progress we've made in prevention and treatment.
New genetic technologies are letting us look at flu evolution right where it starts: within individual people, while they're sick.
Tularemia is an animal disease that can be transmitted to humans. While it can be fatal, it is rare in Australia and can be treated with antibiotics.
Professor Peter Doherty on infectious disease pandemics.
The Conversation, CC BY-ND47.6 MB (download)
William Isdale speaks with the University of Melbourne's Professor Peter Doherty about infectious disease pandemics.
Professor Samir Brahmachari's innovative Open Source Drug Development allows thousands of researchers to work together to discover novel therapies for under-studied diseases.
If you have a blocked or runny nose, chances are you'll reach for a tissue or hanky for a good blow. But is your technique up to scratch?
There are a number of challenges that the World Health Organisation's new leader, Ethiopian-born Tedros Ghebreyesus, will have to navigate during his tenure.
Cholera kills thousands every year but is treatable if it is caught early. Understanding how El Niño shifts cholera risks in Africa can help countries prepare for outbreaks and save lives.
As we head towards flu season, many people are wondering if it's worth getting vaccinated against influenza and if so, when. Here's what you need to know.
How is it the flu has managed to stay around for so long, and why haven't we beaten it yet?
In Australia, there are around 1200 to 1300 cases of tuberculosis each year which means we are among the lowest-risk countries in the world.
The newer drugs for hepatitis C might mean fewer people are diagnosed with liver cancer.
One year after the end of the West African Ebola epidemic, a study of survivors in Guinea shows what has been learned about the deadly virus, and what remains unknown.
Emerging research suggests that preexisting immunity to dengue virus, which is endemic in South America, could make a subsequent Zika infection worse.
Simple steps can lower your risk of bringing home traveller's diarrhoea, respiratory infections and mosquito-borne diseases from your holiday.
Study suggests vaccination and hygiene may help countries that are struggling with gender equality.
Postage-stamp sized patches that target vaccines to the immune system are now in clinical trials.
Cracking genetic responses to the changing environment in Africa would open a new frontier in the drive against rising non-communicable diseases on the continent.
There's a new weapon against mosquitoes that spreads diseases such as dengue and yellow fever – more mosquitoes.