<s>[INST] Why isn't there a cold vaccine? [/INST] The cold can be caused by nearly 250 different viruses. It's just too hard for scientists to make a vaccine that protects you against all of them. Also, from a medical point of view, there's less need to create a vaccine for colds than other illnesses. Although you feel awful when you have one, they generally come and go without any serious complications. You're miserable for a few days, then it's over. Source: WebMD. Link: https://www.webmd.com/cold-and-flu/top-10-questions-cold . Field: General Medicine. Disease: Cold </s>