Clear Food analyzed 345 hot dogs and sausages from 75 different brands sold at 10 retailers and found that 14% had hygienic or substitution issues, according to the report.
(Substitution means when ingredients are added to the product that are not displayed on the label and hygienic issues happen when a "non-harmful contaminant is introduced to the hot dog.")
The online food guide, which uses "genomic technology" to examine foods by ingredients, found human DNA in 2% of the samples, and in two-thirds of the vegetarian samples."
http://www.usatoday.com/story/news/nation-now/2015/10/26/report-human-dna-found-hot-dogs/74617102/
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