| Date | Event | Description |
|---|---|---|
| 4 August 2022 | New citation required but conclusions have not changed | Four additional studies have been incorporated into this review (Abdelmaksoud 2021; Kasiri 2021; Rashid 2021; Yildiz 2021). These provide additional data for the comparison of intranasal corticosteroid sprays with placebo/no treatment. They also provide some data on additional interventions: intranasal corticosteroid drops, hypertonic saline irrigation and zinc sulphate. |
| 28 February 2022 | New search has been performed | This is a living systematic review. Latest searches conducted October 2021. |
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