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Volume 31, Number 5—May 2025
Dispatch
Venezuelan Equine Encephalitis, Peruvian Amazon, 2020
Table 1
Alphavirus serologic reactivity patterns in VEEV IgG-positive serum samples from Loreto, Peru, in study of Venezuelan equine encephalitis, Peruvian Amazon, 2020*
| Sample | VEEV PRNT50 titer | IgG indirect immunofluorescent assay result |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| CHIKV | ONNV | RRV | BFV | SINV | WEEV | EEEV | VEEV | CHIKV vlp | MAYV vlp | ||
| 3216 | >1:320 | + | + | + | - | - | + | - | + | + | + |
| 3270 | 1:40 | + | + | + | + | + | + | + | + | + | + |
| 3393 | 1:40 | – | – | – | – | – | – | – | + | – | – |
| 3399 | 1:160 | – | – | – | – | – | – | – | + | – | – |
| 3624 | 1:40 | – | – | – | – | – | – | – | + | – | – |
| 3634 | 1:40 | + | + | + | – | – | + | – | + | + | + |
| 3876 | 1:40 | – | – | – | – | – | – | – | + | – | – |
| 3927 | 1:80 | – | – | – | – | – | – | – | + | – | – |
| 3940 | 1:40 | – | – | – | – | – | – | – | + | – | – |
| 4140 | >1:320 | + | – | + | – | – | + | – | + | – | – |
| 4294 | 1:160 | + | + | + | – | – | – | – | + | + | + |
| 4321 | 1:80 | + | – | + | – | – | + | + | + | – | – |
| 4420 | 1:80 | – | – | – | – | – | – | – | + | – | + |
| 4590 | 1:40 | – | – | – | – | – | – | – | + | – | – |
| 4669 | 1:80 | – | – | – | – | – | – | – | + | – | – |
| 4747 | 1:160 | – | – | – | – | – | – | – | + | – | – |
| 4768 | 1:40 | + | – | – | – | – | – | – | + | + | + |
| 4797 | 1:160 | + | – | – | – | – | + | – | + | – | + |
*Bold indicates monotypic reactions. BFV, Barmah Forest virus; CHIKV, chikungunya virus; EEEV, Eastern equine encephalitis virus; MAYV, Mayaro virus; ONNV, o’nyong-nyong virus; PRNT50, plaque reduction neutralization test with ≥50% plaque reduction considered positive; RRV, Ross River virus; SINV, Sindbis virus; VEEV, Venezuelan equine encephalitis virus; vlp, virus-like particle; WEEV, Western equine encephalitis virus.