TABLE 3.
Comparison of recovery efficiencies of filtration and centrifugation for competing Naegleria species in vegetative and cystic forms
| Form and Naegleria spp. | Ratio of the 2 Naegleria species | % Recovery
|
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Filtration
|
Centrifugation
|
||||||||
| N. fowleri | N. lovaniensis | N. australiensis | Total Naegleria | N. fowleri | N. lovaniensis | N. australiensis | Total Naegleria | ||
| Cysts | |||||||||
| N. fowleri + N. lovaniensis | 78:22 | 64 | 5 | 50 | 34 | 32 | 40 | ||
| 64:36 | 26 | 76 | 73 | 18 | 113 | 63 | |||
| N. fowleri + N. australiensis | 22:78 | 84 | 6 | 30 | 23 | 23 | 23 | ||
| 66:34 | 33 | 31 | 75 | 76 | 21 | 75 | |||
| 51:49 | 51 | 6 | 37 | 28 | 91 | 83 | |||
| Mean ± SD | 51 ± 24 | 41 ± 50 | 15 ± 14 | 53 ± 21 | 36 ± 23 | 72 ± 57 | 45 ± 40 | 57 ± 25 | |
| Trophozoites | |||||||||
| N. fowleri + N. lovaniensis | 40:60 | 0 | 12 | 7 | 18 | 30 | 18 | ||
| 48:52 | 2 | 19 | 13 | 5 | 54 | 28 | |||
| 69:31 | 0 | 10 | 3 | 27 | 36 | 21 | |||
| N. fowleri + N. australiensis | 52:48 | 2 | 0 | 1 | 32 | 0 | 17 | ||
| 57:43 | 4 | 0 | 2 | 41 | 5 | 27 | |||
| Mean ± SD | 2 ± 2 | 14 ± 5 | 0 ± 0 | 5 ± 5 | 25 ± 14 | 40 ± 13 | 3 ± 4 | 22 ± 5 | |