Evaluation of the trends in the incidence of infectious diseases using the syndromic surveillance system, early warning and response unit, Mongolia, from 2009 to 2017: a retrospective descriptive multi-year analytical study

Table 1 Annual trends in the incidence of major infectious disease syndromes by year in Mongolia, 2009–2017

Syndromes	Annual incidence and proportion, cases/10,000 population (%)									P value
Syndromes	2009	2010	2011	2012	2013	2014	2015	2016	2017	P value
AFR	0.6(4)	1.1(3.8)	1.8 (4.1)	3.2 (8.8)	2.8 (7.5)	3.6 (9.6)	91.7 (67.6)	116.2 (65.9)	17.1 (16.8)	0.0162
AFVR	2 (13.4)	3.7 (12.9)	7 (16.3)	7.9 (21.5)	20.1 (54.5)	22.2 (59)	26.9 (19.9)	44.3 (25.1)	63 (62.2)	< 0.001
AJ	9 (59.5)	17.4 (60.3)	30 (69.6)	17.8 (48.7)	6.9 (18.7)	3.7 (9.9)	3.5 (2.6)	2.1 (1.2)	2.2 (2.2)	0.1416
AWD	1.2 (7.7)	1.8 (6.4)	0.9 (2.2)	1.3 (3.6)	0.9 (2.5)	1.1 (2.9)	1.6 (1.2)	1.2 (10.7)	1.9 (1.9)	0.143
ABD	2.2 (14.4)	4 (13.9)	2.7 (6.2)	5.9 (16.2)	5.6 (15.1)	6.2 (16.5)	11.1 (8.2)	10.9 (6.2)	16.1 (15.9)	< 0.001
FD	0.1 (0.6)	0.7 (2.4)	0.4 (1.0)	0.4 (1)	0.5 (1.4)	0.7 (1.8)	0.7 (0.5)	1.4 (0.8)	0.8 (0.8)	0.0015
NI	0.06 (0.4)	0.07 (0.2)	0.23 (0.5)	0.12 (0.3)	0.16 (0.4)	0.1 (0.3)	0.1 (0.1)	0.15 (0.1)	0.14 (0.1)	0.1995

AFR acute fever with rash, AFVR acute fever with vesicular rash, AJ acute jaundice, AWD acute watery diarrhea, ABD acute bloody diarrhea, FD foodborne disease, NI nosocomial infection
P-values are tested for trend test. Incidences are calculated by cases /10,000 population, and proportions are expressed as % of the syndrome among total reported cases. Underlined text shows the highest incidence of the year

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