was the definition of a vaccine changed

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
was the definition of a vaccine changed	1.55	0.2	6161	50	39
was	0.95	0.1	1344	46	3
the	1.72	0.2	9868	5	3
definition	0.68	0.4	5513	100	10
of	0.19	0.3	5450	11	2
a	1.29	0.1	3065	29	1
vaccine	0.52	0.1	213	39	7
changed	1.95	0.7	5618	40	7

Keyword	CPC	PCC	Volume	Score
was the definition of a vaccine changed	1.76	0.7	5479	93
has the definition of vaccine changed	1.95	0.9	1947	72
when was the definition of vaccine changed	1.66	0.8	855	48
who changed the definition of a vaccine	1.73	0.3	8025	66
why was the definition of vaccine changed	1.4	1	1703	70
cdc vaccine definition change	0.09	0.5	527	22
new definition of vaccine	1.88	0.9	8627	59
how have vaccines changed over the years	1.18	0.6	9100	31
how has vaccines changed over time	0.45	0.2	5442	26
how have vaccines changed the world	0.52	0.4	5596	94
definition of a vaccine vs immunization	1.9	0.5	8534	30
what can the new vaccine do	1.85	0.1	5856	59
finally the vaccine is	0.19	1	8569	74
vaccine schedule changes over the years	1.73	0.8	121	27
difference of immunization and vaccination	0.74	0.1	4105	8
difference between vaccine and immunisation	1.12	0.7	1699	23
immunization vs vaccination definition	0.58	0.4	6141	12
recent article on vaccination	0.66	0.8	7024	54
immunisation and vaccination difference	0.89	0.3	9096	15
difference between vaccination & immunisation	1.54	0.7	9157	49