CDC Monthly Respiratory disease and Influenza Bulletin for Year 2022

Year 2022-August

In August 2022, National Influenza Surveillance sentinel sites collected 403 samples for Influenza and SARS-CoV-2 virus testing. There were 314 samples from Severe Acute Respiratory Illness (SARI) at 9 sites in 5 provinces (Figure 1). There were 89 samples from Influenza-Like Illness Surveillance at 17 sites in 16 provinces (Figure 1). Of 403 samples tested, there were 19 cases of A/H3N2, 1 A/H1N1pdm, and 1 B/Victoria. In addition, there were 40 cases of positive SARS-CoV-2, of which 2 cases were co-infection with A/H3N2.


Year 2022-July

In July 2022, National Influenza Surveillance sentinel sites collected 405 samples for Influenza and SARS-CoV-2 virus testing. There were 321 samples from Severe Acute Respiratory Illness (SARI) at 9 sites in 5 provinces (Figure 1). There were 84 samples from Influenza-Like Illness Surveillance at 17 sites in 16 provinces (Figure 1). Of 405 samples tested, 10 and 14 were positive for A/H3N2 and SARS-CoV-2, respectively.


Year 2022-June

In June 2022, National Influenza Surveillance sentinel sites collected 377 samples for Influenza and SARS-CoV-2 virus testing. There were 260 samples from Severe Acute Respiratory Illness (SARI) at 9 sites in 5 provinces (Figure 1). There were 117 samples from Influenza-Like Illness Surveillance at 17 sites in 16 provinces (Figure 1). 3 samples were positive for A/H3N2 detected from ILI sentinel sites. In addition, all 377 samples were tested for SARS-CoV-2 with 2 positive cases detected from SARI sentinel sites.


Year 2022-May

In May 2022, National Influenza Surveillance sentinel sites collected 214 samples for Influenza and SARS-CoV-2 virus testing. There were 146 samples from Severe Acute Respiratory Illness (SARI) at 9 sites in 5 provinces (Figure 1). There were 68 samples from Influenza-Like Illness Surveillance at 17 sites in 16 provinces (Figure 1). There was no positive influenza A and B circulated in ILI and SARI surveillance. In addition, 214 samples were tested for SARS-CoV-2 with 4 positive cases include 1 ILI and 3 SARI cases.


Year 2022-April

In April 2022, National Influenza Surveillance sentinel sites collected 162 samples for Influenza and SARS-CoV-2 virus testing. There were 110 samples from Severe Acute Respiratory Illness (SARI) at 9 sites in 5 provinces (Figure 1). There were 52 samples from Influenza-Like Illness Surveillance at 17 sites in 16 provinces (Figure 1). There was no positive influenza A and B circulated in ILI and SARI surveillance. In addition, 162 samples were tested for SARS-CoV-2 with 7 positive cases include 5 ILI and 2 SARI cases.


Year 2022-March

In March 2022, National Influenza Surveillance sentinel sites collected 278 samples for Influenza and SARS-CoV-2 virus testing. There were 194 samples from Severe Acute Respiratory Illness (SARI) at 9 sites in 5 provinces (Figure 1). There were 84 samples from Influenza-Like Illness Surveillance at 17 sites in 16 provinces (Figure 1). Among 278 samples, 1 sample was positive for A/H9N2 detected from a SARI sentinel site. Also, 278 samples were tested for SARS-CoV-2 with 54 positive cases include 24 ILI and 30 SARI cases.


Year 2022-February

In February 2022, National Influenza Surveillance sentinel sites collected 197 samples tested with all negative Influenza viruses. There were 130 samples from Severe Acute Respiratory Illness (SARI) at 9 sites in 5 provinces (Figure 1). There were 67 samples from Influenza-Like Illness Surveillance at 17 sites in 16 provinces (Figure 1). 197 samples were also tested for SARS-CoV-2 RT-PCR with 24 positive cases included 3 SARI and 21 ILI cases detected in February 2022.


Year 2022-January

In January 2022, National Influenza Surveillance sentinel sites collected 179 samples tested with all negative Influenza viruses. There were 108 samples from Severe Acute Respiratory Illness (SARI) at 9 sites in 5 provinces (Figure 1). There were 71 samples from Influenza-Like Illness Surveillance at 17 sites in 16 provinces (Figure 1). 179 samples were also tested for SARS-CoV-2 RT-PCR with 2 positive cases included 1 SARI and 1 ILI cases detected in January 2022.