Keyword Analysis & Research: when was the smallpox vaccine developed

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when was the smallpox vaccine developed	1.01	0.6	2672	33	39
when	1.63	0.6	9442	6	4
was	1.71	0.3	5641	10	3
the	1.2	0.5	9752	89	3
smallpox	0.77	0.4	2732	55	8
vaccine	0.79	0.9	6397	34	7
developed	0.69	0.6	6781	57	9

Keyword	CPC	PCC	Volume	Score
when was the smallpox vaccine developed	1.52	0.6	3085	21
who developed the smallpox vaccine	0.02	1	4475	92
who developed a vaccine for smallpox in 1796	1.27	0.1	8008	84
developed a vaccine for smallpox in 1796	0.3	0.7	9074	90
vaccine developed year of smallpox	0.53	0.8	3615	64
developed vaccine against smallpox	1.98	0.3	8021	60
when was smallpox vaccine developed	0.72	0.3	5614	83