This post-marketing study is a multicenter cohort study in individuals aged 60 years or older vaccinated with Abrysvo (RSV vaccine）designed to confirm the safety in individuals aged 60 years or older under actual clinical practice in Japan.

Inclusion Criteria:

1. Individuals aged 60 years or older who have been vaccinated with Abrysvo for the first time after Abrysvo is launched. Those who have previously participated in the clinical trials of this product will be excluded.
2. Vaccinated participants (or his/her legally acceptable representative) who understand the information on this study and have provided written consent regarding their participation in the study.

Exclusion Criteria:

-There are no exclusion criteria for this study.

Individuals aged 60 years or older who have been vaccinated with Abrysvo for the first time.

Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical\_trials/trial\_data\_and\_results/data\_requests.