how did jonas salk make the vaccine

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
how did jonas salk make the vaccine	0.63	0.5	1599	45	35
how	1.17	0.3	7503	29	3
did	1.52	0.4	1304	64	3
jonas	1.98	0.9	9069	89	5
salk	0.84	0.3	9137	26	4
make	1.64	0.3	1475	58	4
the	1.26	0.4	5045	51	3
vaccine	1.07	0.4	8935	36	7

Keyword	CPC	PCC	Volume	Score
how did jonas salk make the vaccine	1.79	0.7	4814	58
when did jonas salk make the vaccine	0.64	1	2835	81
how did jonas salk make the polio vaccine	1.11	0.5	7894	54
when did jonas salk make the polio vaccine	0.22	0.1	344	51
in 1954 jonas salk developed a vaccine	0.48	0.6	5919	21
jonas salk develops the first polio vaccine	0.4	0.3	6008	81
jonas salk invented polio vaccine	0.89	0.6	9904	69
how was the salk vaccine administered	0.65	0.6	2158	27
history of the salk vaccine	0.24	0.8	904	37
when did salk invent vaccine	1.32	1	3198	55
jonas salk with polio vaccine	0.73	0.9	4874	2
when did the salk vaccine come out	1.26	1	2396	32
jonas salk patent polio vaccine	1.54	0.6	5622	11
is the salk vaccine used today	0.99	0.9	156	67
when was salk vaccine introduced	1.9	1	1057	91
jonas salk contribution to medicine	1.38	0.1	9719	58
salk polio vaccine history	0.96	0.7	3128	21