1. If holding off AstraZeneca vaccine does not affect vaccination rate during the investigation period, it is a prudent thing to do.
2. If vaccine rate is expected to drop, number of expected increase in death per day due to covid vs blood clog should be compared, if we were to minimize short term death.
3. More concerning is unknown effect that could take a long time to materialize. This is a tough call to make since any effect is only theoretical at this point.