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Listen to “VEC Vaccine Notes,” a video and podcast series presented by the Vaccine Education Center at Children's Hospital of Philadelphia. Each episode offers vaccine information in a convenient format, so families have the answers they need to make informed decisions, including details and context that addresses what they may have heard in the news or in conversation with others.
This podcast is for general informational and educational purposes only and is not to be considered as professional medical advice for your personal health or for your family's personal health. You should not use it to replace any relationship with a physician or other qualified healthcare professional. For medical concerns, including decisions about vaccinations, medications and other treatments, you should always consult your physician or, in serious cases, seek immediate assistance from emergency personnel. Clinicians must rely on their own informed clinical judgment in making recommendations to their patients. ©2026 The Children’s Hospital of Philadelphia.
Episodes
Oct 14, 2026
Oct 14, 2026
10 min
Did you know that the first antibiotic, penicillin, was discovered by happenstance in the 1920s? Charlotte Moser, Co-Director of the Vaccine Education Center, touches briefly on this history as she discusses the use of antibiotics; health considerations, including allergic reactions and antibiotic resistance; and why antibiotics are used in vaccines. As she describes, any antibiotics that remain in vaccines are present in very small quantities, causing no harm. Find out more in this episode of VEC Vaccine Notes.
Check out the video version on YouTube.
Watch the episode to find out:
- How Alexander Fleming discovered the antibiotic properties of penicillin
- How World War II affected the development and availability of penicillin
- Some of the different considerations related to how antibiotics work
- Which types of antibiotics are used during the vaccine manufacturing process
- How many infections and deaths are caused by antibiotic resistance each year in the U.S.
To learn more about antibiotics, please visit https://bit.ly/vec-antibiotics.
To learn more about vaccine ingredients, please visit https://bit.ly/vec-vax-ingredients.
Questions? Submit the VEC Vaccine Notes form, https://bit.ly/contact-vec-vaccine-notes.
For other vaccines, diseases or general questions about vaccines, check out https://vaccine.chop.edu/.
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