Imported arboviral infections in Italy, July 2014-October 2015: a National Reference Laboratory report

BMC Infectious Diseases

Table 4 DENV, CHIKV and ZIKV diagnosis in the period from July 2014 to October 2015

	Total	Confirmed	Probable	Possible	Not confirmed
DENV diagnosis	157	68	12	33	44
CHIKV diagnosis	97	35	6	14	42
ZIKV diagnosis	16	4^a	0	3^b	9
Dual diagnosis DENV/CHIKV	76: two cases of possible co-infections.	DENV: 18/76 (of which two CHIKV confirmed and one CHIKV possible cases)
Dual diagnosis DENV/CHIKV	76: two cases of possible co-infections.	CHIK: 20/76 (of which two DENV confirmed and 6 DENV possible cases)

^aThe diagnosis of one of these cases was performed in Germany after we excluded DENV and CHIKV infections (ref). One was a case of autochthonous (most likely sexual) transmission (ref)
^bOf these, two were probable cases of past ZIKV infections (PRNT positives and IgM negatives). One showed instead a PRNT b.l. result for ZIKV, which was probably due to cross reactivity of DENV specific antibodies

ISSN: 1471-2334