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Asked • 05/07/19

Can viruses be toxic?

Bacteria can produce toxins like endotoxins and exotoxins. In diseases like cholera or tetanus they can harm infected people due to these toxins. Now, although viruses are much smaller and are dependent on the host cell for their production, are there DNA sequences in viruses which can produce similar toxins, or are viruses made of something that is toxic? If not, can viruses be seen as causing an allergic reaction because like common allergies they don't harm directly, only our immune system generates the problems?

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