Final answer:
Neurotoxins are not contagious and are toxins that affect the nervous system. They differ from viruses and bacteria in that they are poisons produced by organisms that can cause a slow onset of neurological symptoms.
Step-by-step explanation:
Unlike viruses and bacteria, neurotoxins are not contagious. Neurotoxins are toxins that are produced by certain organisms and are poisonous to the nervous system. In conditions such as botulism and tetanus, caused by neurotoxins from the Clostridium species, the onset of symptoms can indeed be slow, as the toxins affect the nervous system gradually. Additionally, while Clostridium species infections can be treated with antibiotics and antitoxins, neurotoxins themselves, once released into the nervous system, need to be acted upon swiftly to prevent severe symptoms and potential death.