A Study to Learn About the Study Medicine Called PF-07868489 in Healthy Adult People and in People With Pulmonary Arterial Hypertension

A Study to Learn About the Study Medicine Ibuzatrelvir in Adults With COVID-19 Who Are Severely Immunocompromised

A Study to Learn About the Study Medicine Called PF-08046054/SGN-PDL1V Versus Docetaxel in Adult Participants With Previously-treated Programmed Cell Death Ligand 1 (PD-L1) Positive Non-Small-Cell Lung Cancer (NSCLC)

This is a Study to Learn About How the Combination of the Study Medicines Sigvotatug Vedotin Plus Pembrolizumab Works in People With Non-small Cell Lung Cancer With High Levels of PD-L1.

A Study to Learn About a Study Medicine Called Ibuzatrelvir in Adult and Adolescent Patients With COVID-19 Who Are Not Hospitalized But Are at Risk For Severe Disease

A Study to Learn About the Study Medicine Called PF-07799933 in People With Advanced Solid Tumors With BRAF Alterations.

A Study to Learn About BNT162b2 (LP.8.1)-Adapted Vaccine Against SARS-CoV-2 in Children 5 Through 11 Years of Age That Are Considered at Higher Risk of Severe COVID-19

A Study to Learn About the Study Medicine Called PF-07275315 in People With Moderate-To-Severe Asthma

A Study to Learn About the Study Medicine PF-07985045 When Given Alone or With Other Anti-cancer Therapies in People With Advanced Solid Tumors That Have a Change in a Gene.

A Study of SGN-CEACAM5C in Adults With Advanced Solid Tumors