New studies highlight the immunological benefits of COVID-19 vaccine boosters, but questions remain over how to best make use of a limited global supply.

中文翻译：

---

提高对 COVID-19 疫苗的免疫力

新研究强调了 COVID-19 疫苗助推器的免疫学益处，但如何最好地利用有限的全球供应仍存在疑问。