Surveillance Data

Type/subtype/lineage of samples analysed at the Centre

Results show the type/subtypes/lineages of viruses received by the Centre from laboratories in each country. Data are shown for samples collected during the month indicated for which the type/subtype have been determined by antigenic and/or genetic analysis at the Centre as of 04 August 2025.

Note: Subtyping is based on analysis of the HA and in some cases is confirmed by further analysis of NA.

Sample Subtypes

Australasia subtype plot
South East Asia subtype plot
South Asia subtype plot
South Pacific Region subtype plot
Africa subtype plot

Total samples received, 1 January - 31 July 2025

AUSTRALASIA

Australia

Australia subtype plot

SOUTH EAST ASIA

Brunei

Brunei subtype plot

Singapore

Singapore subtype plot

Timor-Leste

Timor-Leste subtype plot

SOUTH ASIA

Bhutan

India subtype plot

Nepal

Nepal subtype plot

Sri Lanka

Sri Lanka subtype plot

PACIFIC

Fiji

Fiji subtype plot

New Caledonia

New Caledonia subtype plot

Solomon Islands

Solomon Islands subtype plot

Tahiti

Tahiti subtype plot

AFRICA

South Africa

South Africa subtype plot

To view data from previous years, please click below: