PUBLIC HEALTH PRESENTATION 8-30-21.PPTX
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WeArePublicHealth.org twitter.com/Maricopahealth facebook.com/MCDPH COVID-19 Update 8/30/21 Marcy Flanagan, DBA, MPH, MA Rebecca Sunenshine, MD, FIDSA CAPT, USPHS COVID-19 in Maricopa County Data updated: 8/26/21 Maricopa County Cases by Date Data updated: 8/26/21 Data updated: 08/24/21 COVID-19 Hospitalizations Continue to Increase Data updated: 08/24/21 Hospitalizations similar to Thanksgiving 2020 There are plenty of beds, but not staff • During last peak, AZ had far more cases than the rest of the country, so staff resources were shifted here • Currently, many other states have an increase so staff from other areas are not available • Our own hospital staff are burned out from pandemic • Nurses are retiring/leaving field at record rates • A major hospital system in crisis levels of staffing 8/27/2021 6 The vast majority of cases are unvaccinated 8/27/2021 7 The vast majority of people hospitalized are not fully vaccinated: 25 vs 5 per 100,000 8/27/2021 8 90 % of hospitalized COVID-19 patients are unvaccinated in a major hospital system Deaths continue to increase 8/27/2021 9 In August, 2% of COVID-19 deaths have been in children Children & Schools 1 in 4 cases are children March April May June July August September October November December January February March April May June July August 0 5 10 15 20 25 30 0.7 3.2 8.7 7.5 8.8 10.2 9.6 14.2 14 13 14.1 17.2 17.7 18.4 20.3 19.2 20.3 27.3 Percent of Cases that are Children 8/27/2021 11 Delta Started 1 in 6 cases are children under 12 8/27/2021 12 March April May June July August September October November December January February March April May June July August 0 2 4 6 8 10 12 14 16 18 0.3 1.7 5 4 4.5 5.4 4.2 6.8 6.9 7 7.8 9.8 9.6 9.9 10.6 10.4 12 16.9 Percent of Cases that are Children < 12 Years 6% of hospitalizations are children with the number doubling monthly – 120 in August March April May June July August September October November December January February March April May June July August 0 1 2 3 4 5 6 7 8 9 10 0 0.4 0.9 1.6 6.1 8.7 2 2.5 2.2 2.4 2.6 3.5 4.6 2.7 3.1 3.4 3.4 5.6 Percent of Hospitalizations that are Children 8/27/2021 13 Almost 3X as many school outbreaks in August compared to the peak in February 8/27/2021 14 Open school outbreaks have more than doubled weekly since school opened 8/27/2021 15 166 Ongoing School Outbreaks 8/27/2021 16 8/27/2021 17 What's Changed, Delta Variant, & Boosters Last December § B-117 variant is the dominant strain § Schools are mostly in hybrid mode, which allows for more distancing § Schools required masks § Staff & children were NOT vaccinated Now § Delta variant is the dominant strain § Schools are fully in-person, which makes distancing harder § Masks not required in all schools § Some staff & older children vaccinated What is different now than last December? 8/27/2021 20 Variants – Delta Dominates T-Gen North Dashboard What do we know about the Delta variant • Delta is > 2X as infectious as the original COVID-19 strain • Each infected person can infect 5 people compared with 2 people • 2 studies (Canada and Scotland) show patients infected with Delta were more likely to be hospitalized than patients infected with the original strain • Delta is more likely to cause infection in vaccinated persons compared to the original strain • Vaccinated people who are infected can transmit disease • Unvaccinated persons are at much higher risk of being infected, hospitalized or dying from the Delta strain 8/27/2021 22 Unvaccinated 5X more likely to be infected and 29X more likely to be hospitalized 8/27/2021 23 Update on Booster Doses • CDC and the White House announced a plan for mRNA booster doses to be available starting September 20th, 2021 • All fully vaccinated people with mRNA vaccine will be eligible 8 months after their second dose • Unclear whether some groups will be prioritized over others • All pending recommendations from FDA, CDC and ACIP • Not enough data to recommend booster for J&J vaccine as it was authorized later than the mRNA vaccines (~2 months) 8/27/2021 24 Why Boosters now? • Several studies indicating decreased vaccine effectiveness for protection against infection beginning at 6-8 months • Vaccine is highly effective in preventing hospitalization and death • Unable to determine how much is waning immunity over time vs. changes in the delta strain • Most relevant study among healthcare workers and first responders (HEROES cohort) showed effectiveness for preventing infection went from 91% before Delta to 66% after Delta Fowlkes A, Gaglani M, Groover K, et al. Effectiveness of COVID-19 Vaccines in Preventing SARS-CoV-2 Infection Among Frontline Workers Before and During B.1.617.2 (Delta) Variant Predominance — Eight U.S. Locations, December 2020–August 2021. MMWR Morb Mortal Wkly Rep 2021;70:1167-1169. DOI: http://dx.doi.org/10.15585/mmwr.mm7034e4external icon Tenforde MW, Self WH, Naioti EA, et al. Sustained Effectiveness of Pfizer-BioNTech and Moderna Vaccines Against COVID-19 Associated Hospitalizations Among Adults — United States, March–July 2021. MMWR Morb Mortal Wkly Rep 2021;70:1156-1162. DOI: http://dx.doi.org/10.15585/mmwr.mm7034e2external icon When will kids under 12 be eligible for vaccine? • Original estimates were in September • At the end of July, FDA asked for clinical trials to include additional 3000 child study subjects, which pushed back the timing for FDA review Maricopa County Public Health Response What has public health done to respond? • Testing events – 477 testing events (53 in August) – 33,919 individuals tested (2,638 in August) • Webinars and partner meetings – Weekly school webinars – Healthcare webinars every 1-2 weeks – Weekly Fire/EMS webinars – Grand rounds to healthcare providers (Mayo, Banner, VA) – Weekly meetings with Chief Medical Officers of major healthcare systems County-partnered Vaccine Efforts § 250 Pop-up Events 69,434 doses given at school clinics: 1/3 of school & childcare workforce 150 Regional Events § 1620 Long Term Care Facility Events with 862 facilities fully vaccinated § 828 homebound vaccinated Vaccination Outreach in 8 Months 8/27/2021 29 System Development & Innovation • Automated case and contact notification & education • Automated case interviews • Automated case and outbreak reporting for schools • Automated close contact notification for schools • Data dashboard for cases, hospitalizations and deaths • Vaccination rates by age, race, ethnicity and geographic area • Vaccine location maps searchable by vaccine type 8/27/2021 30 MCDPH CARES Call Center Data Community Action, Resources, & Emergency Support 8/27/2021 31 We had a lot of help from the community 8/27/2021 32 Estimated Value of Volunteer Time Based on Occupation $3,847,570 Questions/Discussion Additional Data & Information Proportion of Cases by Age Group Over Time 8/27/2021 35 Proportion of Hospitalization by Age Group Over Time 8/27/2021 36 Data updated: 08/24/21 Hospital Utilization (AZ Central Region) Data updated: 08/24/21 150 Regional Vaccine Events 8/27/2021 39 Central Northeast Northwest Southeast Southwest Mis. 0 1 2 3 4 5 6 7 8 9 10 11 12 February March April May June July August September October November July/August Data Supporting Boosters • Declining spike protein antibodies after vaccination • BNT162b2 = Pfizer vaccine Data Supporting Boosters • HEROES Cohort (Including AZ Healthcare Workers) Fowlkes A, Gaglani M, Groover K, et al. Effectiveness of COVID-19 Vaccines in Preventing SARS-CoV-2 Infection Among Frontline Workers Before and During B.1.617.2 (Delta) Variant Predominance — Eight U.S. Locations, December 2020–August 2021. MMWR Morb Mortal Wkly Rep 2021;70:1167-1169. DOI: http://dx.doi.org/10.15585/mmwr.mm7034e4external icon. Delta variant (B.1.617.2) § Variant of Concern § First detected: India, October 2020 § Dominant variant in Maricopa County, Arizona and U.S. § Spreads much faster than other variants § May cause more severe cases than the other variants § Infections happen in only a small proportion of people who are fully vaccinated § Preliminary evidence suggests that fully vaccinated people who do become infected with the Delta variant can spread the virus to other Lambda variant (C.37) § Variant of Interest § First detected: Peru, December 2020 § Dominant variant in Argentina, Chile, and Colombia § Has been identified in most US States, though the strain has yet to gain traction § Spreads faster than Alpha strain, like delta § Some concern that it is more resistant to vaccinations Delta vs. Lambda variant