Measles causes more than an acute illness: it suppresses immune memory and increases the risk of complications for years.<br><br><a href="https://ourworldindata.org/measles-increases-disease-risk" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/b2168626-1df5-419a-7709-f57955f46800/w=1350"/></a>

Before the 1970s, most children affected by leukemia would quickly die from it. Now, most children in rich countries are cured.<br><br><a href="https://ourworldindata.org/childhood-leukemia-treatment-history" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/28a0ccf8-4618-4822-638f-ea8143e06000/w=1350"/></a>

Measles once killed millions every year. Vaccines changed this, preventing disease, long-term immune damage, and deadly outbreaks.<br><br><a href="https://ourworldindata.org/measles-vaccines-save-lives" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/5f66d86d-91f5-4839-caa7-d6c5ce64e300/w=1350"/></a>

Data from large meta-analyses show that measles vaccination is highly effective and safe, giving a 95% reduction in the risk of measles.<br><br><a href="https://ourworldindata.org/measles-vaccine-effectiveness-safety" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/1d042616-0031-4929-ef74-a0d7a3176000/w=1350"/></a>

The baby boom reshaped family life and drove population growth in many countries. In this article, we explore the key patterns in seven charts.<br><br><a href="https://ourworldindata.org/baby-boom-seven-charts" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/8ef118fd-a238-4212-76af-2674b5b4d300/w=1350"/></a>

The fertility rate is commonly confused with the eventual number of births per woman. This can result in misinterpreting the impact of policies and trends over time.<br><br><a href="https://ourworldindata.org/total-fertility-rate-births-per-woman" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/07feefbb-15b0-4bbe-6a26-894e38507400/w=1350"/></a>

Data on fertility rates, ages of mothers and fathers at childbirth, twin births, reproductive technologies, contraception, and more.<br><br><a href="https://ourworldindata.org/fertility-rate" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/22159485-fcb9-4811-8ca9-93644ffade00/w=1350"/></a>

Antibiotics revolutionized medicine, but their effectiveness is threatened by resistance. This new page presents global data and research on antibiotics and antibiotic resistance.<br><br><a href="https://ourworldindata.org/antibiotics" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/0983df2b-3d7f-416f-71be-f4ad93a8a100/w=1350"/></a>

Many antibiotics were developed during the “Golden Age of Antibiotics”. How did it happen, why has antibiotic development slowed down since then, and what can we do to reignite it?<br><br><a href="https://ourworldindata.org/golden-age-antibiotics" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/7b3bf2c1-8af6-4e65-2e92-d5e4d781d800/w=1350"/></a>

To use antibiotics more effectively, it’s important to know how different antibiotics work and how antibiotic resistance can evolve and spread.<br><br><a href="https://ourworldindata.org/how-do-antibiotics-work" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/eebf1100-356d-4d5a-de9a-458070451700/w=1350"/></a>

The pandemic has resulted in over twenty million deaths. In this article, we review the key insights from global data on COVID-19.<br><br><a href="https://ourworldindata.org/key-charts-understand-covid-pandemic" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/fb81bdaf-70c8-4a8a-7140-05c61ebe7d00/w=1350"/></a>

Our small team made COVID-19 data clear, reliable, and accessible to a global audience. This is how it happened.<br><br><a href="https://ourworldindata.org/owid-covid-history" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/d22609d0-d3ac-445e-6b38-f6016d38a400/w=1350"/></a>

HPV vaccines offer a rare opportunity to effectively eliminate one type of cancer. By taking this opportunity, it’s possible to save hundreds of thousands of women each year.<br><br><a href="https://ourworldindata.org/hpv-vaccination-world-can-eliminate-cervical-cancer" target="_blank"><img src="https://imagedelivery.net/qLq-8BTgXU8yG0N6HnOy8g/8143c2e1-db2b-4f87-63e3-8ceab16bb700/w=1350"/></a>

Cancer is one of the biggest health challenges worldwide. Around 15% of all deaths are caused by cancer, making it one of the most common causes of death globally.<br><br><a href="https://ourworldindata.org/cancer" target="_blank"><img src="https://ourworldindata.org/images/published/cancer-thumbnail.png"/></a>