The purpose of this study is to learn about the safety and how effective is Zavicefta under actual clinical practice in Japan.

Zavicefta is a combination of Avibactam sodium and Ceftazidime hydrate.

This study is seeking for patients with:

• sepsis (A very serious infection in your blood caused by germ (a bacteria)) or
• renal impairment (loss of kidney function) who are administrated with Zavicefta for the first time.

Subjects will take part in this study from the start date of receiving Zavicefta (Day 1) to Day 28.

Inclusion Criteria:

1. Patients who received Zavicefta for the first time after the launch of Zavicefta
2. Patients who received Zavicefta for an infectious diseases indicated for Zavicefta
3. Patients with diagnosis of sepsis and/or renal impairment (creatinine clearance ≤ 50mL/min) at the start of the treatment with Zavicefta
4. Individuals who understand the nature of this study and give consent for the provision of the information collected in this study to third parties and the use of the information for other than intended use

Exclusion Criteria:

There are no exclusion criteria for this study.

Patients with sepsis or renal impairment (creatinine clearance ≤ 50 mL/min) who are administrated with Zavicefta 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.