Episode 04-03 - You've Been Invaded! Germs, Pathogens, & How They Attack episode artwork

EPISODE · Feb 2, 2026 · 7 MIN

Episode 04-03 - You've Been Invaded! Germs, Pathogens, & How They Attack

from It’s Good to Be Smart! · host Dr. Dave Mulder

In this episode, the "villains" of the microscopic world are unmasked as Dr. Dave defines the four major types of pathogens—bacteria, viruses, fungi, and parasites—and illustrates the different strategies these invaders use to hijack the body’s resources. This episode is part of a series all about your amazing immune system, and the way it is designed to both prevent you from getting sick in the first place, and to fight off invading germs if they do break through the defenses. We'll also learn about different kinds of pathogens, how vaccines work, and things like allergies and autoimmune conditions. The big take-away: your immune system is awesome! Each season of this podcast has a different thematic focus, so if you found this episode interesting or helpful, check out the rest of the episodes in this season! Instructional resources for this episode, including the script, a thinksheet, and alignment with the Next Generation Science Standards can be accessed for free at https://goodtobesmart.com  Remember, “smart” is something we *become* as we learn new things. So, keep listening, keep learning, and keep getting smarter every day! It’s Good to Be Smart! is created by Dr. Dave Mulder with support from the National Science Foundation through a grant from the Robert Noyce Teacher Scholarship Program. This material is based upon work supported by the National Science Foundation under Grant No. (DUE-2243334). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

Episode metadata supplied by the publisher feed · Published Feb 2, 2026

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Episode 04-03 - You've Been Invaded! Germs, Pathogens, & How They Attack

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