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- Category: 2020
- Published: 19 January 2021
- Last Updated: 09 February 2021
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CDC Monthly Respiratory disease and Influenza Bulletin for Year 2020
The influenza positivity rate in December 2020 is lower than November (0.0% vs 3.2%). There were not find positive influenza viruses from Surveillance for Severe Acute Respiratory Syndrome (SARI), The Influenza-like illness (ILI), Febrile Syndromic Surveillance (FSS). All 339 samples were also tested for SARS-Cov2 RT-PCR with no positive cases identified.
The influenza positivity rate in November 2020 is lower than October (3.2% vs 30.3%). Surveillance for Severe Acute Respiratory Syndrome (SARI) found that the positive influenza rate 6(3.9%). The positive rate of Influenza detected by influenza-like illness (ILI) was 1(1%). Febrile Syndromic Surveillance (FSS) identified 4(5.6%) positive and influenzalike illness (AISS) was 0(0%). Influenza subtypes 11 were A/H3N2. All 339 samples were also tested for SARSCov2 RT-PCR with no positive cases identified.
The influenza positivity rate in October 2020 is lower than September (30.3% vs 22.3%). Surveillance for Severe Acute Respiratory Syndrome (SARI) found that the positive influenza rate 33(16.8%). The positive rate of Influenza detected by influenza-like illness (ILI) was 25(35.2%). Febrile Syndromic Surveillance (FSS) identified 21(22.3%) positive and influenzalike illness (AISS) was 5(33.3%). Influenza subtypes 84 were A/H3N2. All 376 samples were also tested for SARSCov2 RT-PCR with no positive cases identified.
The influenza positivity rate in September 2020 is higher than previous months. Surveillance for Severe Acute Respiratory Syndrome (SARI) found that the positive influenza rate 32(26.2%). The positive rate of Influenza detected by influenzalike illness (ILI) was 18(22.2%). Febrile Syndromic Surveillance (FSS) identified 32(40.5%) positive influenza A/H3N2. and Influenza detected by influenza-like illness (AISS) was 7(53.8%). Influenza subtypes 96 were A/H3N2. All 294 samples were also tested for SARS-Cov2 RT-PCR with no positive cases identified.
The influenza positivity rate in August 2020 is higher than previous months. Surveillance for Severe Acute Respiratory Syndrome (SARI) found that the positive influenza rate 31(23.7%). The positive rate of Influenza detected by influenzalike illness (ILI) was 15(23.1%). Febrile Syndromic Surveillance (FSS) identified 42(40.4%) positive influenza A/H3N2. and Influenza detected by influenza-like illness (AISS) was 8(66.7%). Influenza subtypes 96 were A/H3N2. All 298 samples were also tested for SARS-Cov2 RT-PCR with no positive cases identified.
The influenza positivity rate in July 2020 is higher than previous months. Influenza subtypes 42 were A/H2N3. Surveillance for Severe Acute Respiratory Syndrome (SARI) found that the positive influenza rate 10(5.9%). The positive rate of Influenza detected by influenza-like illness (ILI) was 3(2.9%). Febrile Syndromic Surveillance (FSS) identified 24 (18.8%) positive influenza A/H3N2. and Influenza detected by influenza-like illness (AISS) was 4(36.4%). Influenza subtypes 41 were A/H3N2. All 396 samples were also tested for SARSCov2 RT-PCR with no positive cases identified.
The influenza positivity rate in June 2020 is higher than previous months. Influenza subtypes 2 were A/H2N3. Surveillance for Severe Acute Respiratory Syndrome (SARI) found that the positive influenza rate 2(3.51%), and no positive Influenza detected by influenza-like illness by (AISS), Febrile Syndromic Surveillance (FSS) identified 0 (0%) positive influenza A/H3N2. Influenza subtypes 2 were A/H3N2. All 277 samples were also tested for SARS-Cov2 RT-PCR with no positive cases identified.
In May, 2020. did not identify any positive influenza case. included Surveillance for Severe Acute Respiratory Syndrome (SARI), influenza-like illness (ILI), Febrile Syndromic Surveillance, and influenza-like illness surveillance (AISS). All 304 samples were also tested for SARS-Cov2 RT-PCR with no positive cases identified.
The influenza positivity rate in April 2020 is lower than previous months. Influenza subtypes 1 were A/H2N3 and not found A/H1N1pdm. Surveillance for Severe Acute Respiratory Syndrome (SARI) influenza-like illness (ILI) found that the no samples positive influenza. Febrile Syndromic Surveillance (FSS) identified 2 (2.1%) positive influenza A/H3N2. Influenza subtypes 3 were A/H3N2. All 402 samples were also tested for SARS-Cov2 RT-PCR with no positive cases identified.
The influenza positivity rate in March 2020 is lower than previous months. Influenza subtypes 27 were A/H2N3 and 1 was A/H1N1pdm. Surveillance for Severe Acute Respiratory Syndrome (SARI) found that the positive influenza rate 5(6.8%). Similarly, the positive rate of Influenza detected by influenza-like illness (ILI) was 9(10.2%). Febrile Syndromic Surveillance (FSS) identified 13 (9.5%) positive influenza A/H3N2. Influenza subtypes 26 were A/H1N1pdm and 1 were A/H3N2. All 305 samples were also tested for SARS-Cov2 RT-PCR with no positive cases identified.
The influenza positivity rate in February 2020 is lower than previous months. Influenza subtypes 14 were A/H2N3 and 30 were A/H1N1pdm. Surveillance for Severe Acute Respiratory Syndrome (SARI) found that the positive influenza rate (5.61%) was slightly higher than that of January (4.26%). There were seven cases of Influenza A/H3N2. Similarly, the positive rate of Influenza detected by influenza-like illness (ILI) screening was 22.7% higher than in January and before 2019 (9.5%). Influenza subtypes 16 were A/H1N1pdm and 6 were A/H3N2.
The influenza positivity rate in February 2020 is lower than previous months. Influenza subtypes 14 were A/H2N3 and 30 were A/H1N1pdm. Surveillance for Severe Acute Respiratory Syndrome (SARI) found that the positive influenza rate (5.61%) was slightly higher than that of January (4.26%). There were seven cases of Influenza A/H3N2. Similarly, the positive rate of Influenza detected by influenza-like illness (ILI) screening was 22.7% higher than in January and before 2019 (9.5%). Influenza subtypes 16 were A/H1N1pdm and 6 were A/H3N2.