We apply our vaccine intent classifier (“Vaccine intent classifier”) to Bing search logs from February 1 – August 31, 2021. Vaccine intent classifierWe develop a vaccine intent classifier to detect users who are expressing vaccine intent, i.e., seeking the COVID-19 vaccine with web search. Since we cannot estimate vaccine intent rates for all ZCTAs, first we visualize vaccine intent rates per county (following Eq. Changes in vaccine concerns as holdouts approach vaccine intentSince we defined holdouts as those who waited several months to show vaccine intent but eventually did (in July and August 2021), we have the opportunity to study how holdouts’ vaccine concerns changed leading up to their eventual vaccine intent. Since precision of vaccine intent timing is particularly important for this analysis, we focus on vaccine intent expressed either through a vaccine intent query or a manually labeled vaccine intent URL (either from AMT or regular expression).

Source: New York Times August 01, 2024 20:47 UTC