There is no vaccine for the common cold because it is not deadly and occurs due to multiple viruses. The common cold is caused by rhinovirus, parainfluenza and other seasonal viruses. The way in which vaccines work makes it difficult to develop a vaccine for all the cold-causing viruses which infect and mutate quickly.
A research paper has discussed the reasons behind failed attempts for a vaccine against rhinovirus in detail. The main reasons discussed are large genomes and multiple viruses.
Besides this, the symptoms of the common cold including sneezing, runny nose, cough and sore throat are mild and often go away with remedies such as staying hydrated, taking complete rest, gargling with water, and over-the-counter medicines, etc. Another study assessed the need for a vaccine for the common cold and suggested the need for proper studies that ‘should include common cold incidence, vaccine safety, and mortality related to the vaccine’.
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