Assessment of two complementary influenza surveillance systems: sentinel primary care influenza-like illness versus severe hospitalized laboratory-confirmed influenza using the moving epidemic method

Table 1 Moving Epidemic Method (MEM) threshold levels for influenza epidemic activity

Threshhold level (× 100.000 h)	baseline	low	medium	high
SHLCI	1.82	9.18	20.91	30.1
SHLCI-FLUA	1.33	7.07	23.36	39.61
SHLCI-FLUB	0.5	1.56	4.27	6.25
PIDIRAC-ILI	74.00	293.45	425.12	500.8
PIDIRAC-FLU	13.35	59.48	84.98	99.5
PIDIRAC-FLUA	10.06	33.99	90.52	139.56
PIDIRAC-FLUB	5.95	24.97	57.66	83.47

SHLCI Severe hospitalized laboratory confirmed influenza, SHLCI-FLUA A Severe hospitalized laboratory confirmed influença type A, SHLCI-FLUA B Severe hospitalized laboratory confirmed influença type B, PIDIRAC-ILI Incidence rate for Primary care inflenza like illness, PIDIRAC-FLU Incidence rate for Primary care influenza laboratory confirmed cases, PIDIRAC-FLUA Incidence rate for Primary care influença type A laboratory confirmed cases, PIDIRAC-FLUB Incidence rate for Primary care influenza type B laboratory confirmed cases

ISSN: 1471-2458