| S/N | Authors and year | Country | Population/type of study | incidence | Prevalence | Group most affected | Reported Incidences % |
| 1 | Punia et al. 2014 [15] | India | Cross-sectional of 165 HCWs | 17% | - | - | |
| 2 | Jamu et al. 2016 [18] | Botswana | Cross-sectional of 885 HCWs | 11%/6months | Nurses (OR: 4.1, Drs 4.2) | ||
| 3 | Izadi et al. 2015 [22] | Iran | C/S of 309 HCWs | 26.90% | - | Nurses (63.9%) | - |
| 4 | Jahangiri et al. 2016 | Iran | 168 registered nurses | 76/56% | - | 60.20% | |
| 5 | Jayanth et al. 2009 [20] | India | C/S of 296 HCWs | Nurses 28.4%, Drs 21.6% | - | Nurses @ 28.4% | - |
| 6 | Parithran et al. [19] | India | 200 Dental Staff | - | 27.50% | - | |
| 7 | Moodley et al. [23] | South Africa | Dental staff and students | - | 22% | Students @ 76% | 81 |
| 8 | Mbaisi et al. [41] | Kenya | C/S, 305HCWs | - | 19% NSI/25% | Nurses @ 50% | - |
| 9 | Denic et al. 2015 [31] | Serbia | C/S, 983HCWs | - | 29.60% | 40.2 | |
| 10 | Bolarinwa et al. 2011 [29] | Nigeria | C/S, 247 PHCWs | - | 31% | - | 19.5 |
| 11 | Bidira et al. 2014 [28] | Ethiopia | C/S, 211 Nurses | - | 39.30% | - | |
| 12 | Talaat et al. 2003 [17] | Egypt | C/S, 1485 HCWs | - | 35.6%/3months | - | |
| 13 | Hanafi et al. 2011 [33] | Egypt | C/S, HCWs | - | 63.3 | - | |
| 14 | Qazi et al. [75] | Pakistan | C/s 198 HCWs | - | 50% | - | |
| 15 | Kuruuzum et al. 2008 [76] | Turkey | C/S, 350 HCWs | - | 58% | Nurses @ 74.6% | |
| 16 | Askarian et al. 2015 [16] | Iran | C/S, 137 HCWs | - | 72.1 - 73.7% | ||
| 17 | Nwankwo et al. 2011 [30] | Nigeria | Surgical resident doctors | (PI/EBBF) 67% | |||
| 18 | Nouetchognou et al. [40] | Cameroon | C/S, 150 HCWs | - | 36.7 EBBF | ||
| 19 | Laisser et al. 2017 [77] | Tanzania | C/S, 277 Randomly selected HCWs | 1.96/100person/year | 59% | ||
| 20 | Hysieh et al. 2006 [78] | Taiwan | HCWsover 3 years | 4.4/100person/year | Nurses @ 60.0% | ||
| 21 | Wang et al. 2015 [79] | China | Transfusion centre | Nurses @ 49.5% | |||
| 22 | Bhardwaj et al. 2014 [80] | Malaysia | HCWs in orthopaedic ward | 20.90% | |||
| 23 | Moro et al. [81] | Dorminican Republic | HCWs in 440 hospital/clinics | 22.30% | |||
| 24 | Salehi et al. 2010 [3] | Afghanistan | C/S, 950 HCWs | 12/230() | 72% | Obygn @ 96.1% |