E. coli infections are contagious between humans
While most E. coli infections are acquired from environmental sources, contaminated food, or water, certain pathogenic strains can be transmitted between humans in close settings such as households.
The claim is specific and falsifiable, passing Step 0. Papers [1] and [3] provide direct evidence of human-to-human (secondary household or person-to-person) transmission of specific pathogenic E. coli strains, supporting the claim that E. coli infections can be contagious between humans.
K. TOKUDA, Y. YAHATA, T. SUNAGAWA. Prevention of secondary household transmission during Shiga toxin-producing<i>Escherichia coli</i>outbreaks. 2016. https://doi.org/10.1017/s0950268816001199
The study demonstrates secondary household transmission of Shiga toxin-producing E. coli among family members, highlighting person-to-person spread in outbreak settings.
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Mojtaba Mohseni, Benyamin Djawadi, Noushin Khazaei. <i>Escherichia coli</i> O157:H7 and Its Effect on Human Health. 2023. https://doi.org/10.5772/intechopen.101825
The review notes that certain specialized virulent strains, such as E. coli O157:H7, possess the ability to spread easily from person to person.
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