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Mary M. Agócs, MD1, Fatima Serhan, PhD1, Catherine Yen, MD2,3, Jason M. Mwenda, MD4, Lúcia H.

The fight against polio has been part of CDC’s mission since the 1950s, and the global push to eradicate polio is just the latest chapter in CDC’s polio efforts

* Based on responses to a question that asked, "Have you smoked at least 100 cigarettes in your entire life?" Respondents answering "yes" were then asked, "Do you now smoke cigarettes every day, some days, or not at all?" Current smokers have smoked at least 100 cigarettes in their lifetime and currently smoke every day or some days.

Abbreviation: GED = general equivalency diploma.

* Respondents were asked, "During the past 12 months, have you regularly had insomnia or trouble sleeping?".

Know Hepatitis. Act Now. For World Hepatitis Day, learn more about the different types of viral that impact millions worldwide, and what you can do.

Lao People’s Democratic Republic to Launch Seasonal Flu Vaccination Program - CDC

Because of age, health conditions, or other factors, some people should not get certain vaccines or should wait before getting them. Read the guidelines below for each vaccine.

Learn what factors increase the risk of children being bullied or children more likely to bully others and what warning signs can indicate that bullying may be happening. Visit StopBullying.gov.