The National Institute of Health has published its Boletín Epidemiológico for week 20. Here's my translation/summary of its Zika update:
From the outbreak's start in week 40 of 2015 to week 20 of 2016, 6,402 confirmed Zika cases have been reported as well as 80,953 clinically suspected cases. Week 20 saw 3,466 cases; 1,551 were reported this week, and 1,951 were delayed reports of earlier cases. The departments of Valle del Cauca, Norte de Santander, Santander, Huila and Tolima accounted for 55.49% of all cases.
Case reports have diminished since week 6, with an increase in week 13. The largest number of cases was reported in week 5 (6,423). The average number of cases over the past five weeks is 2,404 cases per week. Women account for 66.5% of confirmed and suspected cases. Persons aged 30-64 are 61.97% of the total; 14.05% are aged 25-29, 2.6% are under one year old, and 3.38% are 65 and older.
Pregnant women diagnosed with Zika virus
As of week 20, pregnant women made up 4,097 confirmed cases and 11.668 suspected cases who reported having Zika-compatible symptoms. Norte de Santander department has reported the largest number of case with 16.71% (2,634 pregnant women).
Intensified surveillance for microcephaly
Between weeks 1 and 20 of 2016, five microcephaly cases associated with Zika have been confirmed, 26 were discarded, and 57 cases remain under study.
Special surveillance for neurological syndromes compatible with Zika virus infection
Between December 15 and week 20, 550 cases of neurological syndrome with antecedents compatible with Zika virus. These are in process of verification. Norte de Santander has the major proportion of such cases with 82 (14.91%). Men account for 56.5% (311) of cases; persons aged 65 or more make up 12.2% (167) of cases. Guillain-Barré syndrome accounts for 64.18% of cases with Zika-compatible prior illness. No new cases were reported in week 20.