Serological surveillance demonstrates subclinical West Nile virus infections in blood donors and zoo employees, highlighting undetected human transmission.
Key Points
Autochthonous West Nile virus transmissions occur with infrequent clinical symptoms, leading to undetected subclinical spread across human populations.
Targeted screening evaluates subclinical infection rates through limited-scope blood donor testing alongside serological testing of exposed zoo workers.
Serosurvey assessments among high-risk workers highlight silent transmission risks, supporting improved infectious disease surveillance across Germany.