NEARLY ON TARGET
Jul 11, 2020
2 minutes
—Compiled by
SONALI ACHARJEE
HITS
SWINE FLU
Time taken: Five months from the April 2009 outbreak
Efficacy: 60-70 per cent
Challenges: Doesn’t offer long-term immunity
EBOLA
Time taken: Around two years from the 2014 outbreak
Efficacy: 95-100 per cent
Acceptance and distribution in developing countries
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