Trends in Neisseria meningitidis serogroups amongst patients with suspected cerebrospinal meningitis in the meningitis belt of Ghana: a 5-year retrospective study

Table 2 Distribution/trend of the various Neisseria meningitidis serogroups confirmed using polymerase chain reaction by year

N. meningitidis Serogroups	2016 N = 94	2017 N = 120	2018 N = 59	2019 N = 56	2020 N = 66	Total N = 395	Cochran-Armitage p-value
N. meningitidis Serogroups	n (%)	n (%)	n (%)	n (%)	n (%)	n (%)	Cochran-Armitage p-value
B	0 (0.0)	1 (0.8)	1 (1.7)	0 (0.0)	0 (0.0)	2 (0.5)	0.8732
C	1 (1.1)	1 (0.8)	0 (0.0)	0 (0.0)	0 (0.0)	2 (0.5)	0.3303
NG	0 (0.0)	0 (0.0)	5 (8.5)	5 (8.9)	2 (3.0)	12 (3.0)	0.0334
W	92 (97.9)	116 (96.7)	36 (61.0)	28 (50.0)	10 (15.2)	282 (71.4)	< 0.01
X	1 (1.1)	2 (1.7)	17 (28.8)	23 (41.1)	54 (81.8)	97 (24.6)	< 0.01

B, C, W, and X: Neisseria meningitidis serogroups B, C, W, and X, respectively
NG Nongroupable serogroups

ISSN: 1471-2334