Table 1. Detection of African arenavirus-specific antibodies in small mammals in Tanzania, 1985–1989*.
| Genus | Antibody detection† by region (no. positive/no. tested) |
Total | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Arusha | Iringa | Lindi | Mbeya | Morogoro | Mtwara | Ruvuma | Songea | Tanga | ||
| Acomys | – | 0/3 | 0/2 | 0/2 | 0/57 | 0/2 | – | – | – | 0/66 |
| Aethomys | – | 0/3 | 0/4 | – | 0/23 | 0/11 | 0/7 | 0/8 | – | 0/56 |
| Arvicanthis | 0/13 | 6/30 | – | – | – | – | – | – | 0/87 | 6/130 |
| Cricetomys | – | – | – | – | 0/35 | – | – | – | – | 0/35 |
| Lemniscomys | 0/5 | 1/2 | 1/2 | – | 1/30 | 0/2 | 0/1 | – | – | 3/42 |
| Lophuromys | 0/3 | 0/1 | – | – | 0/3 | – | – | – | 0/7 | 0/14 |
| Mastomys | 7/39 | 0/17 | 1/120 | 0/12 | 181/1,054‡ | 0/81 | 0/8 | 0/25 | 0/82 | 189/1,438 |
| Mus | – | 0/1 | – | 0/1 | 1/47 | – | – | – | – | 1/49 |
| Praomys | – | 0/3 | – | 0/1 | 0/1 | – | – | – | 0/1 | 0/6 |
| Rattus | – | – | 0/24 | 0/1 | 0/49 | 0/20 | 0/3 | 0/15 | 0/196 | 0/308 |
| Tatera | 0/1 | 0/1 | 0/32 | – | 0/127 | 0/69 | 0/11 | 0/3 | – | 0/244 |
| Uranomys | – | – | – | – | 0/11 | – | – | – | – | 0/11 |
| Sciuridae | – | – | 0/13 | – | 0/2 | – | 0/2 | – | 0/10 | 0/27 |
| Crocidura | – | – | – | – | 1/14 | – | – | – | – | 1/14 |
| Petrodomus | – | – | 0/9 | – | – | 0/18 | – | – | – | 0/27 |
| 13 other genera |
– |
0/1 |
0/2 |
0/7 |
0/21 |
0/20 |
– |
– |
0/2 |
0/53 |
| Total | 7/61 | 7/62 | 2/208 | 0/24 | 184/1,474 | 0/223 | 0/32 | 0/51 | 0/385 | 200/2,520 |
*Positive samples as well as the respective sampling sites and animals are indicated in boldface. †Immunofluorescent antibody (IFA) assay was performed with Lassa virus–infected cells (cut-off titer 16). ‡Fifty IFA assay–positive serum samples were randomly selected and tested by immunoblotting. Presence of African arenavirus–specific antibodies, as defined by reactivity with Lassa virus nucleoprotein and glycoprotein 2, was confirmed in 47 serum specimens.