Temporal and spatial analysis of psittacosis in association with poultry farming in the Netherlands, 2000–2015

BMC Infectious Diseases

Table 2 Number of cases per four-digit postal code

Number of cases per four digit postal code	Frequency
0	3487
1	447
2	91
3	21
4	2

Number of human cases of psittacosis notified per four digit postal code in the Netherlands between 01-01-2000 and 01-09-2015, with exception of cases related to known outbreaks. The median number of cases (n = 700 cases) per four-digit postal code area (n = 4048 areas) is zero, the mean number of cases is 0.17, the standard deviation is 0.47, and the variance is 0.23

ISSN: 1471-2334