A computational platform for antigenic surveillance of the influenza A(H3N2) virus based on the HA1 protein sequence. It includes four modules:

• Antigenic variant determination: determine the antigenic variant based on HA1 protein sequence
• Antigenic cluster inference: infer the antigenic cluster based on HA1 protein sequence
• Antigenic world map: display the antigenic cluster distribution in the world map
• Antigenic cluster dynamics: display the antigenic cluster dynamics in a country/region

A web server for predicting the antigenic relationship (either antigenic variant or similar) between influenza H1N1 viruses based on their HA1 protein sequences.

This is to predict the antigenic relationship (either antigenic variant or similar) between highly pathogenic avian influenza (HPAI) H5N1 viruses based on their HA1 protein sequences.

A web server for predicting the antigenic relationship (either antigenic variant or similar) between influenza H1N1pdm viruses based on their HA1 protein sequences.

A webserver for predicting antigenic variants of influenza A virus based on HA1 protein sequences. It can be used in any HA subtype of the influenza A virus.

A web server for predicting the antigenic relationship (either antigenic variant or similar) between influenza B viruses (including Yamagata and Victoria linage) based on their HA1 protein sequences .

PREDAC-CNN is developed to infer antigenic clusters of seasonal influenza A viruses with convolutional neural network (CNN). It takes as input the paired HA1 sequences of influenza A/H3N2 or A/H1N1 viruses.