Part 12/16:
Challenges in Confirming Transmission Pathways
Despite sophisticated tools and rapid scientific advancements, investigators faced significant challenges. Detecting the actual source of infection remained difficult due to asymptomatic cases, incomplete recall, and the timing of tests.
For example, blood samples subjected to serology testing provided strong evidence of previous infection, but the timing, sensitivity, and interpretation required expertise. Moreover, some individuals recovered before serology testing was available, creating gaps in the data.