Visualization of ZsG signal and viral load assessment in NiV-infected hamsters. (A), ZsG fluorescence in lung, nasal turbinates, brain, and cervical lymph nodes of rNiV-M/ZsG-infected hamsters (105 or 107 TCID50 IN) that succumbed to disease at early (4–5 dpi), mid (6–9 dpi), or late (16–17 dpi) timepoints after infection, and in a survivor (28 dpi). (B), Viral RNA (closed symbols) and isolated infectious virus (open symbols) in samples of lung, brain, liver, and kidney of hamsters inoculated IN with rNiV-M (105 or 107 TCID50) or rNiV-M/ZsG (105 or 107 TCID50). Abbreviations: dpi, days post infection; IN, intranasal; NiV, Nipah virus; rNiV-M, recombinant Nipah virus-Malaysia; TCID50, 50% tissue culture infective dose; ZsG, ZsGreen1 fluorescent protein.