Rickettsial retinitis—an Indian perspective

Journal of Ophthalmic Inflammation and Infection

Table 1 Investigations and molecular diagnostic done to identify etiology

Sr. no.	Rickettsial sub-classification	Weil-Felix test			Chikungunya serology	Dengue serology	WNV and JE serology	MP in blood film	WIDAL	PCR for scrub typhus
Sr. no.	Rickettsial sub-classification	OX 2	OX K	OX 19	Chikungunya serology	Dengue serology	WNV and JE serology	MP in blood film	WIDAL	PCR for scrub typhus
1	Unclassified	1:1280	Negative	1:40	Negative	Negative	Not done	Negative	Negative	Not done
2	ET	Negative	Negative	1:160	Negative	Negative	Negative	Negative	Negative	Negative
3	Unclassified	1:160	1:160	1:320	Negative	Negative	Not done	Negative	Negative	Not done
4	ITT	1:160	Negative	1: 160	Negative	Negative	Not done	Negative	Negative	Not done
5	Unclassified	1:160	1:80	Negative	Negative	Negative	Negative	Negative	Not done	Negative
6	Unclassified	1:320	1: 40	1:80	Negative	Negative	Not done	Not done	Not done	Not done
7	Unclassified	1:160	1: 160	1:160	Negative	Negative	Negative	Not done	Negative	Negative
8	ITT	1: 320	Negative	1: 320	Negative	Negative	Not done	Not done	Not done	Not done
9	ITT	1:320	Negative	1:160	Negative	Negative	Not done	Negative	Negative	Not done
10	ITT	1:640	Negative	1:160	Negative	Negative	Not done	Negative	Negative	Not done

WNV West Nile virus, JE Japanese encephalitis, MP malaria parasite, WIDAL typhoid, ITT Indian tick typhus, ET epidemic/endemic typhus