Why is it hard to cure Common Cold? + more videos |

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Firstly, there are more than 200 viruses which cause common cold. Now, developing 200 vaccines for 200 viruses is impractical.
Secondly, developing a single vaccine for all 200 viruses is proving to be complex, time consuming and expensive as a lot of R&D is required.
Thirdly, we can’t make antivirals to kill viruses, just like we make antibiotics to kill bacteria. This is because antibiotics attack the bacteria’s protective cell walls. But as viruses don’t have any cell wall, antivirals will be useless.
However, there might be some good news. Now, a virus survives in human body by hijacking a protein found in human cells. Researchers have developed a compound which inhibits the virus from doing so. But as the compound targets human cells, more research is needed to test its safety.