Respiratory Viruses Surveillance Bulletin: Epidemiological Week 7, 2026

Overview

• Regional influenza positivity and SARS-CoV-2 positivity are below 5% in week 7 of 2026 (Figure 1). The predominant circulating influenza subtypes are influenza A(H3/N2) and influenza B(Victoria) (Figure 2).
• Among northern hemisphere countries, influenza activity is decreasing in Brunei Darussalam, China (Hong Kong SAR), and Lao PDR, but has increased in Indonesia, Japan, Mongolia, Philippines, Republic of Korea, Singapore, and Viet Nam.
• All southern hemisphere countries have decreased influenza activity except in Papua New Guinea.