Experts Debunk Viral Claim That Parasite Eggs Found In Vaccine Vials Cause Cancer

A viral Instagram video posted on September 15, 2026 claims that "parasite eggs" were found in a tetanus vaccine vial and that those eggs later hatch and cause cancer. The clip, widely shared and often amplified by accounts promoting so-called "detox" products, features Robin Goffe — who identifies herself as a retired flight attendant and "family herbalist" — saying she and her husband observed "undetermined parasite eggs" under magnification.

Why Experts Say The Claim Is False

Public-health experts contacted by AFP called the claim unfounded. Amanda Kwong, director of the Public Health Communications Collaborative, said:

"There is zero reason to worry about parasite transmission through vaccines."

She and other specialists note that vaccine manufacturing includes validated sterilization and filtration steps that remove or destroy living organisms and biological contaminants; parasite eggs would not survive those processes.

Regulation, Storage And Safety Measures

The U.S. Food and Drug Administration enforces Current Good Manufacturing Practice (CGMP) regulations that require manufacturers to monitor quality and safety at every stage of production. Healthcare providers also follow national procedures for shipping, storage, handling and disposal; any vial suspected of contamination is quarantined and replaced, Diana Yassanye of Vaccinate Your Family told AFP.

Context On Parasites And Cancer

While certain parasites have been linked to cancer, public-health authorities point out that the best-known examples in the United States involve liver flukes acquired from eating raw or undercooked freshwater fish — infections that are foodborne, not injected. The Dana-Farber Cancer Institute and other experts emphasize there is no evidence that vaccines increase cancer risk; some vaccines can even prevent cancers or be used in cancer treatment.

Beware Of "Detox" Claims

Experts including Mark Slifka, professor of microbiology and immunology at Oregon Health & Science University, warn that many products marketed as "detox" lack evidence of benefit and can be harmful, particularly to children. Social-media users should treat sensational health claims with skepticism and check them against reputable sources.

Bottom line: The claim that parasite eggs capable of causing cancer were found in vaccine vials is not supported by evidence. Sterilization, filtration and regulatory oversight make such contamination extremely unlikely, and any suspicious vaccine lot would be quarantined and tested.

AFP continues to track and report on vaccine misinformation.