Forbes November 24, 2021
William A. Haseltine

It is clear from surging cases in Europe and in the US that we cannot make the mistake of relying on vaccines alone for population protection. We need to fight Covid fatigue and maintain the effective public health protocols of test, trace and isolate. Here, I describe a new study from Hong Kong that further validates this approach by demonstrating how effective stringent quarantine policies are in controlling Covid transmission without the need for city-wide lockdowns. Only 6 out of 4198 participants in the study tested positive for SARS-CoV-2 antibodies after three waves of Covid that occurred prior to Hong Kong’s vaccination rollout.

Despite a relatively slow vaccine uptake, Hong Kong is one of the few places that has...

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