Are vaccines safe? What’s actually in them? In this 2-part episode of Science in 5, WHO’s Dr. Kate O’Brien breaks down how vaccines are tested, approved, and monitored even after they reach the public. She also explains what happens if a safety concern is flagged.

Should kids just “get the disease” instead of being vaccinated? Can vaccines really overwhelm a child’s immune system? Who decides what vaccines we get—and why? If you’re a new parent with questions about vaccines, you’re not alone. In this 2-part episode of Science in 5, WHO’s Dr. Kate O’Brien breaks down the science behind childhood vaccinations, the importance of the schedule, and the truth behind common concerns.

What does a mother need to know to ensure that she has a safe pregnancy and delivery? What are some warning signs to watch for? And what are a woman’s rights while going through a pregnancy and delivery? Join our maternal health expert Dr Femi Oladapo on Science in 5.

Severe resource shortages are threatening the global response to end tuberculosis. Is the world on the brink of a global TB crisis? A quarter of the world’s population could be infected with TB and not even know it. Is there a cure? What is the treatment? How do we diagnose TB? Listen in to Dr Tereza Kasaeva on Science in 5 today.

Did you know that diseases are being eliminated by countries all over the world. In the last five years alone, 44 eliminations have been confirmed by WHO. What does it take to eliminate a disease? What needs to happen before WHO can certify an elimination? Once eliminated, can these diseases come back? Dr Jérôme Salomon explains on Science in 5.

Did you know that if a child with measles walks into a classroom, every unvaccinated child will most certainly get it? Why are measles cases increasing worldwide? Why should you be concerned about it? And is the measles vaccine safe and effective? Dr Natash Crowcroft explains on Science in 5.

Did you know that WHO receives over a 100,000 signals every month? What are these health signals or threats? How do scientists and WHO decide which one of these signals could be a potential outbreak or disease? Tune in to Science in 5 with Dr Chikwe Ihekweazu to learn how WHO protects your health every day.

How do we track the Influenza virus every season to decide what strains of the virus to include in a vaccine? Is the vaccine safe and when should you get vaccinated? Shoshanna Goldin explains in Science in 5.