some diseases?
why is it difficult to develop vaccines for
Answers
Answer:
As of February 21st, 2,250 have died worldwide from Coronavirus, while 18,862 have recovered and 55,703 are currently infected. Having made top news stories for around a month and a half, many may wonder why a vaccine for the virus hasn’t been made yet. Of course, the simple answer would be that it’s difficult. So what makes it difficult?
To begin with, viruses mutate very quickly. Made up of ribonucleic acid (RNA), as this genetic material exists on a single strand, unlike a double-stranded DNA, it easily gets cut up and remixed once broken. This enables viruses to mutate quickly, meaning that any cures or vaccines made for a specific RNA may quickly become obsolete.
Although vaccines have worked well in thwarting certain versions of viruses- the recurrence of polio in some countries thanks to a new mutated version immune to previous vaccines is a good example of how difficult it is to thwart viruses even once a vaccine has been made.