when was the vaccine created

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when was the vaccine created	0.14	0.2	5970	20	28
when	1.98	0.9	3398	10	4
was	1.94	0.2	9423	13	3
the	0.4	0.5	4418	47	3
vaccine	1.13	0.6	3125	76	7
created	0.51	1	4364	79	7

Keyword	CPC	PCC	Volume	Score
when was the vaccine created	1.29	0.7	4110	69
when was the first vaccine created	0.5	0.4	8084	80
when was the polio vaccine created	0.06	0.2	5630	59
chickenpox vaccine created	1.76	0.3	6291	92
when was the smallpox vaccine created	0.11	1	8973	77
when was the chickenpox vaccine created	0.29	0.6	1183	16
when was the measles vaccine created	0.3	0.3	7709	76
when was the covid vaccine created	0.99	0.4	6081	70
when was the yellow fever vaccine created	1.72	0.9	6014	57
when was the first vaccine created for covid	0.34	0.1	8070	91
how was the first vaccine created	0.47	1	4322	51
first vaccine created	1.91	0.4	7850	14
when was the first influenza vaccine created	1.64	0.8	9330	57
first ever vaccine created	1.42	0.9	6215	4
when was the first rabies vaccine created	0.44	0.8	4567	91
when was the first vaccine created/where	1.61	0.4	1784	91