Keyword Analysis & Research: when did mrna vaccine research begin

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when did mrna vaccine research begin	1.53	0.3	6690	55	36
when	0.76	0.8	6318	26	4
did	1.01	0.2	418	83	3
mrna	0.63	0.6	4227	61	4
vaccine	1.53	0.1	6690	3	7
research	1.77	0.6	1067	85	8
begin	0.07	0.8	2026	37	5

Keyword	CPC	PCC	Volume	Score
when did mrna vaccine research begin	1.37	0.3	4078	93