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There is no vaccine for the common cold, because to develop a vaccine, you have to have a specific virus and you know the serotype of the virus and the species of the virus. With all these hundreds of viruses and different species in all of them, it’s almost impossible to try to figure out what vaccine you would make and against what virus. Now, I should back up and say that there is an influenza vaccine, and we certainly give that every year. But as far as respiratory syncytial virus, develop a vaccine against that virus, it did more harm than good. It made people, sicker, children sicker. And as far as the many other virus types, it’s almost impossible to decide which vaccine you’re going to make and how, and how many you need.
