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WastewaterSCAN @wastewaterscan.bsky.social · 13h

📊 WWSCAN Weekly Data: Measles (wild-type): Measles has been detected in 1 state in the Midwest and 1 state in the Northeast in the most recent 10 days of sampling.🛟😷🧪

Measles Map: A map that shows which plants and regions have detected measles in the past 10 days. There have been detections in 1 state in the Midwest (IN) and 1 in the Northeast (CT).

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WastewaterSCAN @wastewaterscan.bsky.social · 13h

📊 WWSCAN Weekly Data: Rare pathogens overview: Measles, Candidozyma auris, Hepatitis A, Parvovirus, and Mpox Clade II had at least one detection in the 395 samples collected in the past 10 days. The Influenza H5 Marker, Mpox Clade Ib and West Nile Virus did not.🛟😷🧪

Rare pathogens overview: Dials summarizing detections for all monitored rare pathogens. There were no detections for the H5 influenza marker, mpox clade Ib, and West Nile Virus, and a low number of detections for measles, Candidozyma auris, measles, hepatitis A, mpox clade II, and parvovirus.

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WastewaterSCAN @wastewaterscan.bsky.social · 13h

📊 WWSCAN Weekly Data: Rotavirus: Rotavirus is in the ‘Low’ category nationally, with low concentrations and no significant trend over the last 3 weeks.🛟😷🧪

Rotavirus: A line graph showing rotavirus concentrations in wastewater nationally over the past year.

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WastewaterSCAN @wastewaterscan.bsky.social · 13h

📊 WWSCAN Weekly Data: Norovirus: Norovirus is in the ‘Low’ category nationally, with low concentrations and no significant trend over the last 3 weeks.🛟😷🧪

Norovirus: A line graph showing norovirus concentrations in wastewater over the past year nationally and for four regions. Concentrations are currently relatively low.

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WastewaterSCAN @wastewaterscan.bsky.social · 13h

📊 WWSCAN Weekly Data: EV-D68: EV-D68 is in the ‘High’ category nationally, with high concentrations and a downward trend over the last 3 weeks. EV-D68 typically has seasons every other year, and levels have increased over the past few weeks.🛟😷🧪

EV-D68: A line graph showing aggregated concentrations of EV-D68 nationally and in each census region. EV-D68 levels have increased substantially over the past few weeks

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WastewaterSCAN @wastewaterscan.bsky.social · 13h

📊 WWSCAN Weekly Data: Seasonal Respiratory Pathogens: Nationwide, the four seasonal respiratory pathogens we monitor (Influenza A and B, RSV, and HMPV) are in the low category and out of season onset. Influenza A is starting to be detected more frequently.🛟😷🧪

Seasonal Respiratory Pathogens: Plots showing the percent of detections of Influenza A, Influenza B, RSV, and HMPV over the past year nationally and for four regions (maroon bars are % detect / blue - % non-detect). All peaked in either the Winter of 2025 or Spring of 2026 and all except Influenza A are at low levels, though detections are increasing for Influenza A.

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WastewaterSCAN @wastewaterscan.bsky.social · 13h

📊 WWSCAN Weekly Data: COVID-19 Variants: In sequencing data from a subset of WWSCAN sites for the week of Sep 19, 2026, we are seeing the XFG variant in orange make up 59% of variants, followed by LF.7 (24%). Note: sequencing data has a longer lag of 1-2 weeks after collection.🛟😷🧪

COVID-19 Variants: A bar graph showing the proportions of SARS-CoV-2 variants measured in wastewater over time. The XFG variant is the most predominant variant.

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WastewaterSCAN @wastewaterscan.bsky.social · 13h

📊 WWSCAN Weekly Data: COVID-19: Levels are rising in the Northeast, have leveled off in the Midwest and West, and are falling in the South.🛟😷🧪

COVID-19 Regional Peaks: Four line charts with regional aggregated lines (black)—Midwest, Northeast, South, and West. The orange dashed lines show levels 365 days ago, while the blue dashed lines show winter wave levels. Some regional levels are near or have surpassed their respective winter 2025-2026 waves. Levels are rising in some regions but are falling in the South.

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WastewaterSCAN @wastewaterscan.bsky.social · 13h

📊 WWSCAN Weekly Data: COVID-19: Nationwide, SARS-CoV-2 is in the ‘High’ category, with no significant trend over the last 3 weeks & high concentrations relative to the past 365 days. Our wastewater data & CDC’s clinical test positivity data both show that levels are high but may be leveling out.🛟😷🧪

COVID-19 Wastewater and Positivity: Line graph showing concentrations of SARS-CoV-2 in wastewater nationally (black line) and the percent of clinical tests that are positive for SARS-CoV-2 (orange line). Both were low in late spring & early summer, and are currently high.

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WastewaterSCAN @wastewaterscan.bsky.social · 13h

📊 WWSCAN Weekly Data: Respiratory & Gastrointestinal Weekly Update: Nationwide, SARS-CoV-2, Influenza A, EV-D68, and Rotavirus are in the high category. Norovirus is in the medium category. HMPV, RSV, and Influenza B are in the ‘Low’ category.🛟😷🧪

Respiratory & gastrointestinal weekly update: Dials showing that SARS-CoV-2, Influenza A, EV-D68, and Rotavirus are in the high category. Norovirus is in the medium category. The other pathogens (Influenza B, RSV, and HMPV) are in the low category.

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WastewaterSCAN @wastewaterscan.bsky.social · 13/10/2026

🚨 Influenza A is categorized as “High" in #wastewater nationally. Influenza A is one of more than a dozen infectious diseases that WastewaterSCAN monitors across the country. We share #wastewater data on influenza A and B, along with the H1, H3, and H5 influenza subtypes. data.wastewaterscan.org

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WastewaterSCAN @wastewaterscan.bsky.social · 05/10/2026

October is #RSV Awareness Month. While respiratory syncytial virus (RSV) often causes mild, cold-like symptoms, it can lead to serious illness in infants and older adults. RSV is one of more than a dozen infectious diseases we monitor for in community #wastewater. 🦠

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

📊 WWSCAN Weekly Data: Measles (wild-type): Measles has been detected in 1 state in the Midwest and 1 state in the Northeast in the most recent 10 days of sampling.🛟😷🧪

A map that shows which plants and regions have detected measles in the past 10 days. There have been detections in 1 state in the Midwest (IA) and 1 in the Northeast (PA).

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

📊 WWSCAN Weekly Data: Rare pathogens overview: Measles, Candidozyma auris, Hepatitis A, Parvovirus, and West Nile Virus had at least one detection in the 405 samples collected in the past 10 days. The Influenza H5 Marker, Mpox Clade Ib and Mpox Clade II did not.🛟😷🧪

Dials summarizing detections for all monitored rare pathogens. There were no detections for the H5 influenza marker, mpox clade Ib and II, and a low number of detections for measles, Candidozyma auris, measles, hepatitis A, West Nile Virus, and parvovirus.

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

📊 WWSCAN Weekly Data: Rotavirus: Rotavirus is in the ‘Low’ category nationally, with low concentrations and no significant trend over the last 3 weeks.🛟😷🧪

A line graph showing rotavirus concentrations in wastewater nationally over the past year.

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

📊 WWSCAN Weekly Data: Norovirus: Norovirus is in the ‘Medium’ category nationally, with medium concentrations and no significant trend over the last 3 weeks..🛟😷🧪

A line graph showing norovirus concentrations in wastewater over the past year nationally and for four regions. Concentrations are currently relatively low.

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

📊 WWSCAN Weekly Data: EV-D68: EV-D68 is in the ‘High’ category nationally, with high concentrations and no significant trend over the last 3 weeks. EV-D68 typically has seasons every other year, and levels have increased over the past few weeks.🛟😷🧪

A line graph showing aggregated concentrations of EV-D68 nationally and in each census region. EV-D68 levels have increased substantially over the past few weeks.

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

Plots showing the percent of detections of Influenza A, Influenza B, RSV, and HMPV over the past year nationally and for four regions (maroon bars are % detect / blue - % non-detect). All peaked in either the Winter of 2025 or Spring of 2026 and are now at low levels, though detections are increasing for Influenza A.

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

📊 WWSCAN Weekly Data: COVID-19 Variants: In sequencing data from a subset of WWSCAN sites from the week of Sep 19, 2026, we are seeing the XFG variant in orange make up 59% of variants, followed by LF.7 (24%). Note sequencing data has a longer lag of 1-2 weeks after collection.🛟😷🧪

A bar graph showing the proportions of SARS-CoV-2 variants measured in wastewater over time. The XFG variant is the most predominant variant.

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

📊 WWSCAN Weekly Data: COVID-19: In September 2026, SARS-CoV-2 levels were up 50% in the West, 19% in the South, 51% in the Midwest, and 125% in the Northeast compared to August. Levels are rising in some regions but are falling in the South.🛟😷🧪

Four line charts with regional aggregated lines (black)—Midwest, Northeast, South, and West. The orange dashed lines show levels 365 days ago, while the blue dashed lines show winter wave levels. Some regional levels are near or have surpassed their respective winter 2025-2026 waves. Levels are rising in some regions but are falling in the South.

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

📊 WWSCAN Weekly Data: COVID-19: Nationwide, SARS-CoV-2 is in the ‘High’ category, with no significant trend over the last 3 weeks and high concentrations relative to the past 365 days. Our wastewater data and CDC’s clinical test positivity data both show that levels are high. 🛟😷🧪

Line graph showing concentrations of SARS-CoV-2 in wastewater nationally (black line) and the percent of clinical tests that are positive for SARS-CoV-2 (orange line). Both were low in late spring & early summer, and are currently high.

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

📊 WWSCAN Weekly Data: Respiratory & Gastrointestinal Weekly Update: Nationwide, SARS-CoV-2 and EV-D68 are in the high category. Norovirus is in the medium category. Rotavirus, HMPV, RSV, Influenza A, and Influenza B are in the ‘Low’ category.🛟😷🧪

Dials showing that SARS-CoV-2 and EV-D68 are in the high category. Norovirus is in the medium category. The other pathogens (Rotavirus, Influenza A, Influenza B, RSV, and HMPV) are in the low category.

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

📊 WWSCAN Weekly Data: Rotavirus: Rotavirus is in the ‘Low’ category nationally, with low concentrations and no significant trend over the last 3 weeks.🛟😷🧪

Rotavirus: A line graph showing rotavirus concentrations in wastewater nationally.

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

📊 WWSCAN Weekly Data: Norovirus: Norovirus is in the ‘Medium’ category nationally, with medium concentrations and no significant trend over the last 3 weeks.🛟😷🧪

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

📊 WWSCAN Weekly Data: Seasonal Respiratory Pathogens: Nationwide, the four seasonal respiratory pathogens we monitor (Influenza A and B, RSV, and HMPV) are in the low category and out-of-season onset. Influenza A is starting to be detected more frequently.🛟😷🧪

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

📊 WWSCAN Weekly Data: COVID-19: In September 2026, SARS-CoV-2 levels were up 50% in the West, 19% in the South, 51% in the Midwest, and 125% in the Northeast compared to August.🛟😷🧪

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

📊 WWSCAN Weekly Data: COVID-19: Our wastewater data and CDC’s clinical test positivity data both show that levels are rising. Levels are rising in some regions but are falling in the South.🛟😷🧪

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WastewaterSCAN @wastewaterscan.bsky.social · 01/10/2026

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WastewaterSCAN @wastewaterscan.bsky.social · 30/09/2026

Join us in celebrating @aphl.org Public Health Laboratory Appreciation Month! 🧪 During September, we honor the scientists, technicians, and staff who keep our communities safe, one test at a time. #ThanksPHLabs #Epidemiology #WastewaterSCAN #APHL

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WastewaterSCAN @wastewaterscan.bsky.social · 28/09/2026

A few weeks ago, we toured the Palo Alto Regional Water Quality Control Plant, a dedicated member of our network.👷💩 It's always great to peek behind the scenes to see how #wastewater is treated and samples are collected. We are very thankful to our utility and lab partners for their hard work!

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WastewaterSCAN @wastewaterscan.bsky.social · 27/09/2026

Learn more. wastewaterscan.org/en/pathogens#Norovirus

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WastewaterSCAN @wastewaterscan.bsky.social · 27/09/2026

With the school year underway, norovirus is one contagious virus to watch for. Often called the “stomach flu,” norovirus is actually unrelated to the flu. It spreads easily and can resist some disinfectants. Norovirus can cause severe nausea and dehydration, especially in young children. 🦠

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WastewaterSCAN @wastewaterscan.bsky.social · 25/09/2026

📊 WWSCAN Weekly Data: Measles (wild-type): Measles has been detected in 1 state in the Midwest, 1 state in the Northeast, and 1 state in the South in the most recent 10 days of sampling.🛟😷🧪

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WastewaterSCAN @wastewaterscan.bsky.social · 25/09/2026

📊 WWSCAN Weekly Data: Rare pathogens overview: Measles, Candidozyma auris, Hepatitis A, Parvovirus, West Nile Virus, and the Influenza A H5 marker had at least one detection in the 435 samples collected in the past 10 days. Mpox Clade Ib and Mpox Clade II did not.🛟😷🧪

Rare pathogens overview: Dials summarizing detections for all monitored rare pathogens. There were no detections for mpox clade Ib and II, and a low number of detections for measles, Candidozyma auris, measles, hepatitis A, West Nile Virus, parvovirus, and the H5 influenza marker.

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WastewaterSCAN @wastewaterscan.bsky.social · 25/09/2026

📊 WWSCAN Weekly Data: Rotavirus: Rotavirus is in the ‘Medium’ category nationally, with medium concentrations and no significant trend over the last 3 weeks.🛟😷🧪

Rotavirus: A line graph showing rotavirus concentrations in wastewater since measurements resumed around May. Concentrations are slightly increasing, especially in the South.

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WastewaterSCAN @wastewaterscan.bsky.social · 25/09/2026

📊 WWSCAN Weekly Data: Norovirus: Norovirus is in the ‘Medium’ category nationally, with medium concentrations and no significant trend over the last 3 weeks.🛟😷🧪

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WastewaterSCAN @wastewaterscan.bsky.social · 25/09/2026

Seasonal Respiratory Pathogens: Line graphs showing concentrations of Influenza A, Influenza B, RSV, and HMPV over the past year nationally and for four regions. All peaked in either the Winter of 2025 or Spring of 2026 and are now at low levels.

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WastewaterSCAN @wastewaterscan.bsky.social · 25/09/2026

📊 WWSCAN Weekly Data: COVID-19 Variants: In sequencing data from a subset of WWSCAN sites from the week of Sep 5, 2026, we are seeing the XFG variant in orange make up 53.4% of variants, followed by LF.7 (21.7%) and BA.3.2 (8.6%). Sequencing data has a longer lag of 1-2 weeks after collection.🛟😷🧪

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WastewaterSCAN @wastewaterscan.bsky.social · 25/09/2026

📊 WWSCAN Weekly Data: COVID-19: In September 2026, SARS-CoV-2 levels were up 50% in the West, 19% in the South, 51% in the Midwest, and 125% in the Northeast compared to August.🛟😷🧪

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WastewaterSCAN @wastewaterscan.bsky.social · 25/09/2026

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WastewaterSCAN @wastewaterscan.bsky.social · 25/09/2026

📊 WWSCAN Weekly Data: Respiratory & Gastrointestinal Weekly Update: Nationwide, SARS-CoV-2 and EV-D68 are in the high category. Rotavirus and Norovirus are in the medium category. HMPV, RSV, Influenza A, and Influenza B are in the ‘Low’ category.🛟😷🧪

Respiratory & gastrointestinal weekly update: Dials showing that SARS-CoV-2 and EV-D68 are in the high category. Rotavirus and Norovirus are in the medium category. The other pathogens (Influenza A, Influenza B, RSV, and HMPV) are in the low category.

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WastewaterSCAN @wastewaterscan.bsky.social · 21/09/2026

Last week, we officially processed and tested 100,000 #wastewater samples—monitoring infectious disease trends across ~150 sites!✨ Explore our #data dashboard to see wastewater levels near you: data.wastewaterscan.org 📊

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WastewaterSCAN @wastewaterscan.bsky.social · 17/09/2026

📊 WWSCAN Weekly Data: Measles (wild-type): Measles has been detected in 1 state in the Northeast and 1 state in the South in the past 10 days.🛟😷🧪

Measles Map: A map that shows which plants and regions have detected measles in the past 10 days. There have been detections in 1 state in the South (GA) and one in the Northeast (PA).

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WastewaterSCAN @wastewaterscan.bsky.social · 17/09/2026

📊 WWSCAN Weekly Data: Rare pathogens overview: Measles, Candidozyma auris, Hepatitis A, Parvovirus, and West Nile Virus, had at least one detection in the 468 samples collected in the past 10 days. Mpox Clade Ib, Mpox Clade II, and the Influenza A H5 marker did not.🛟😷🧪

Rare pathogens overview: Dials summarizing detections for all monitored rare pathogens. There were no detections for mpox clade Ib and II and the H5 influenza marker, and a low number of detections for measles, Candidozyma auris, measles, hepatitis A, West Nile Virus, and parvovirus.

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WastewaterSCAN @wastewaterscan.bsky.social · 17/09/2026

📊 WWSCAN Weekly Data: Rotavirus: Rotavirus is in the ‘Medium’ category nationally, with medium concentrations and no significant trend over the last 3 weeks.🛟😷🧪

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WastewaterSCAN @wastewaterscan.bsky.social · 17/09/2026

📊 WWSCAN Weekly Data: Norovirus: Norovirus is in the ‘Medium’ category nationally, with low concentrations and an upward trend over the last 3 weeks.🛟😷🧪

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