Table 5.

Infectious and Non-infectious inflammatory diseases (NIID) as etiology of Fever of Unknown Origin in Europe, Asia and the Middle East (selected studies published during the last 15 years)

Continent/region	First author, year of publication	Country	Infectious diseases (% of diagnosed patients)	NIID (% of diagnosed patients)	Patients with a final diagnosis, n (%)
Europe	Bleeker-Rovers, 2007[28]	Netherlands	32.4	44	36/73 (49)
Europe	Efstathiou, 2009[29]	Greece	38.2	41.6	89/112 (79.4)
Europe	Pedersen, 2012[24]	Denmark	32	55	31/52 (59.6)
Europe	Robine, 2014[2]	France	23.5	61	51/103 (49.5)
Europe	Pereira, 2016[30]	Switzerland	34.8	19.6	46/76 (60.5)
Europe	Garcia-Vicente, 2018[31]	Spain	55.6	44.4	45/67 (67.2)
Europe	Bosilkovski, 2019 (2011-2015 cohort)[21]	North Macedonia	36.5	31.8	85/106 (80.2)
Europe	Mulders-Manders, 2019[13]	Netherlands	47	47	68/104 (65.4)
Asia	Hu, 2008[13]	China	41.8	37.7	122/142 (86)
Asia (tropical)	Kei, 2010[32]	Singapore	57.1	14.3	7/12 (58.3)
Asia (tropical)	Manohar, 2011[33]	India	51.4	18.9	37/58 (63.8)
Asia (tropical)	Bandyopadhyay, 2011[26]	India	62.5	12.5	144/164 (87.8)
Asia	Kim, 2012[34]	South Korea	29.3	19.5	41/48 (85.4)
Asia (tropical)	Mir, 2014[27]	India	60.6	16.7	66/91 (72.5)
Asia	Naito, 2013[3]	Japan	23.1	30.6	93/121 (76.9)
Asia (tropical)	Singh, 2015[35]	India	36	40	25/47 (53.2)
Asia	Yang, 2015[36]	China	43.3	29.9	67/175 (38.3)
Middle East	Kucukardali, 2008[37]	Turkey	40.8	36.2	130/154 (84.4)
Middle East	Abdelbaky, 2011[37]	Egypt	56.2	27	89/100 (89)
Middle East	Ali-Eldin, 2011[38]	Egypt	48	17.3	81/93 (87.1)
Middle East	Gafter-Gvili, 2015[39]	Israel	59	20.5	83/112 (74)
Middle East	Montasser, 2015[40]	Egypt	71.9	15.7	345/374 (92.5)
Middle East	Kabapy, 2016[41]	Egypt	80.5	17.7	961/979 (98.2)