Vaccine breakthrough cases in Washington State to 1st September 2021
This week’s update from Washington State showing vaccine breakthrough cases and which Sars-CoV-2 variant is causing them up to 1st September 2021. This week, the Delta variant has posted another large increase for vaccine breakthroughs, and, as it is now the predominant variant in the region, will presumably continue to do so for some time to come.
Much of the backlog of virus genome sequencing that built up two weeks ago appears to have been cleared, so there is a big reduction in sequences listed under the “other” category this week. Those sequences have now been largely identified and have moved mostly to the Delta row.
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Vaccine Breakthroughs up to 1st September 2021
| 1st Sept 2021 Variant | Lineage | Number of Vaccine Breakthrough Cases With Variant | Percentage of Vaccine Breakthrough Cases With Variant | Percentage of Sequences From All Covid-19 Cases With Variant | Increase in Number of Breakthroughs From Previous Week |
|---|---|---|---|---|---|
| Alpha | B.1.1.7 | 399 | 15% | 33% | 1 |
| Gamma | P.1 | 196 | 7% | 8% | -2 |
| Epsilon | B.1.429 | 124 | 5% | 12% | 0 |
| Delta | B.1.617.2 | 1837 | 67% | 25% | 443 |
| Iota | B.1.526 | 34 | 1% | 2% | 0 |
| Beta | B.1.351 | 11 | 0% | 1% | 0 |
| Epsilon | B.1.427 | 13 | 0% | 1% | 1 |
| Eta | B.1.525 | 4 | 0% | 0% | 0 |
| Kappa | B.1.617.1 | 3 | 0% | 0% | 0 |
| B.1.617.3 | B.1.617.3 | 0 | 0% | 0% | 0 |
| Other | Other | 112 | 4% | 18% | -111 |
| Total | Total | 2733 | 100% | 100% | 332 |
Vaccine Breakthroughs up to 25th August 2021
| 25th August 2021 Variant | Lineage | Number of Vaccine Breakthrough Cases With Variant | Percentage of Vaccine Breakthrough Cases With Variant | Percentage of Sequences From All Covid-19 Cases With Variant | Increase in Number of Breakthroughs From Previous Week |
|---|---|---|---|---|---|
| Delta | B.1.617.2 | 1394 | 58% | 18% | 546 |
| Alpha | B.1.1.7 | 398 | 17% | 31% | 40 |
| Gamma | P.1 | 198 | 8% | 7% | 12 |
| Epsilon | B.1.429 | 124 | 5% | 11% | 7 |
| Iota | B.1.526 | 34 | 1% | 2% | 6 |
| Epsilon | B.1.427 | 12 | 0% | 1% | 1 |
| Beta | B.1.351 | 11 | 0% | 1% | 1 |
| Eta | B.1.525 | 4 | 0% | 0% | 0 |
| Kappa | B.1.617.1 | 3 | 0% | 0% | 0 |
| Other | Other | 223 | 9% | 27% | -540 |
| Total | Total | 2401 | 100% | 100% | 73 |
Vaccine Breakthroughs up to 18th August 2021
| 18th August 2021 Variant | Lineage | Number of Vaccine Breakthrough Cases With Variant | Percentage of Vaccine Breakthrough Cases With Variant | Percentage of Sequences From All Covid-19 Cases With Variant | Increase in Number of Breakthroughs From Previous Week |
|---|---|---|---|---|---|
| Delta | B.1.617.2 | 848 | 36% | 12% | 219 |
| Alpha | B.1.1.7 | 358 | 15% | 30% | 6 |
| Gamma | P.1 | 186 | 8% | 7% | 4 |
| Epsilon | B.1.429 | 117 | 5% | 11% | 1 |
| Iota | B.1.526 | 28 | 1% | 2% | 0 |
| Epsilon | B.1.427 | 11 | 0% | 1% | 0 |
| Beta | B.1.351 | 10 | 0% | 1% | 0 |
| Eta | B.1.525 | 4 | 0% | 0% | 0 |
| Kappa | B.1.617.1 | 3 | 0% | 0% | 2 |
| Other | Other | 763 | 33% | 35% | 676 |
| Total | Total | 2328 | 100% | 100% | 908 |
Vaccine Breakthroughs up to 11th August 2021
| 11th August 2021 Variant | Lineage | Number of Vaccine Breakthrough Cases With Variant | Percentage of Vaccine Breakthrough Cases With Variant | Percentage of Sequences From All Covid-19 Cases With Variant | Increase in Number of Breakthroughs From Previous Week |
|---|---|---|---|---|---|
| Delta | B.1.617.2 | 629 | 44% | 12% | 224 |
| Alpha | B.1.1.7 | 352 | 25% | 39% | 9 |
| Gamma | P.1 | 182 | 13% | 9% | 7 |
| Epsilon | B.1.429 | 116 | 8% | 14% | 0 |
| Iota | B.1.526 | 28 | 2% | 3% | 1 |
| Epsilon | B.1.427 | 11 | 1% | 2% | 0 |
| Beta | B.1.351 | 10 | 1% | 1% | 0 |
| Eta | B.1.525 | 4 | 0% | 0% | 0 |
| Kappa | B.1.617.1 | 1 | 0% | 0% | 0 |
| Other | Other | 87 | 6% | 20% | 37 |
| Total | Total | 1420 | 100% | 100% | 278 |
Vaccine Breakthroughs up to 4th August 2021
| 4th August 2021 Variant | Lineage | Number of Vaccine Breakthrough Cases With Variant | Percentage of Vaccine Breakthrough Cases With Variant | Percentage of Sequences From All Covid-19 Cases With Variant | Increase in Number of Breakthroughs From Previous Week |
|---|---|---|---|---|---|
| Delta | B.1.617.2 | 405 | 35% | 10% | 151 |
| Alpha | B.1.1.7 | 343 | 30% | 41% | 6 |
| Gamma | P.1 | 175 | 15% | 9% | 7 |
| Epsilon | B.1.429 | 116 | 10% | 15% | 0 |
| Iota | B.1.526 | 27 | 2% | 3% | 1 |
| Epsilon | B.1.427 | 11 | 1% | 2% | 0 |
| Beta | B.1.351 | 10 | 1% | 1% | 0 |
| Eta | B.1.525 | 4 | 0% | 0% | 0 |
| Kappa | B.1.617.1 | 1 | 0% | 0% | 0 |
| Other | Other | 50 | 4% | 19% | -4 |
| Total | 1142 | 100% | 100% | 161 |
Vaccine Breakthroughs up to 28th July 2021
| 28th July 2021 Variant | Lineage | Number of Vaccine Breakthrough Cases With Variant | Percentage of Vaccine Breakthrough Cases With Variant | Percentage of Sequences From All Covid-19 Cases With Variant | Increase in Number of Breakthroughs From Previous Week |
|---|---|---|---|---|---|
| Alpha | B.1.1.7 | 337 | 34% | 43% | 29 |
| Gamma | P.1 | 168 | 17% | 10% | 12 |
| Epsilon | B.1.429 | 116 | 12% | 15% | 3 |
| Delta | B.1.617.2 | 254 | 26% | 7% | 141 |
| Iota | B.1.526 | 26 | 3% | 3% | 4 |
| Beta | B.1.351 | 10 | 1% | 1% | 0 |
| Epsilon | B.1.427 | 11 | 1% | 2% | 0 |
| Eta | B.1.525 | 4 | 0% | 0% | 0 |
| Kappa | B.1.617.1 | 1 | 0% | 0% | 0 |
| Zeta | P.2 | 0 | 0% | 0% | 0 |
| Other | Other | 54 | 6% | 18% | 4 |
| Total | 981 | 100% | 100% | 193 |
Vaccine Breakthroughs up to 21st July 2021
| 21st July 2021 Variant | Lineage | Number of Vaccine Breakthrough Cases With Variant | Percentage of Vaccine Breakthrough Cases With Variant | Percentage of Sequences From All Covid-19 Cases With Variant | Increase in Number of Breakthroughs From Previous Week |
|---|---|---|---|---|---|
| Alpha | B.1.1.7 | 308 | 39% | 44% | -1 |
| Gamma | P.1 | 156 | 20% | 10% | 9 |
| Epsilon | B.1.429 | 113 | 14% | 16% | 0 |
| Delta | B.1.617.2 | 113 | 14% | 4% | 23 |
| Iota | B.1.526 | 22 | 3% | 3% | 0 |
| Beta | B.1.351 | 10 | 1% | 1% | -1 |
| Epsilon | B.1.427 | 11 | 1% | 2% | 0 |
| Eta | B.1.525 | 4 | 1% | 0% | 0 |
| Kappa | B.1.617.1 | 1 | 0% | 0% | 0 |
| Zeta | P.2 | 0 | 0% | 0% | 0 |
| Other | Other | 50 | 6% | 19% | 0 |
| Total | 788 | 100% | 100% | 30 |
Vaccine Breakthroughs up to 14th July 2021
| 14th July 2021 Variant | Lineage | Number of Vaccine Breakthrough Cases With Variant | Percentage of Vaccine Breakthrough Cases With Variant | Percentage of Sequences From All Covid-19 Cases With Variant | Increase in Number of Breakthroughs From Previous Week |
|---|---|---|---|---|---|
| Alpha | B.1.1.7 | 309 | 41% | 44% | 12 |
| Gamma | P.1 | 147 | 19% | 10% | 6 |
| Epsilon | B.1.429 | 113 | 15% | 16% | 0 |
| Delta | B.1.617.2 | 90 | 12% | 4% | 20 |
| Iota | B.1.526 | 22 | 3% | 3% | 1 |
| Beta | B.1.351 | 11 | 1% | 1% | 0 |
| Epsilon | B.1.427 | 11 | 1% | 2% | 0 |
| Eta | B.1.525 | 4 | 1% | 0% | 0 |
| Kappa | B.1.617.1 | 1 | 0% | 0% | 0 |
| Zeta | P.2 | 0 | 0% | 0% | 0 |
| Other | Other | 49 | 6% | 20% | 0 |
| Total | 757 | 100% | 100% | 39 |
Vaccine Breakthroughs up to 7th July 2021
| 7th July 2021 Variant | Lineage | Number of Vaccine Breakthrough Cases With Variant | Percentage of Vaccine Breakthrough Cases With Variant | Percentage of Sequences From All Covid-19 Cases With Variant | Increase in Number of Breakthroughs From Previous Week |
|---|---|---|---|---|---|
| Alpha | B.1.1.7 | 297 | 41% | 44% | 11 |
| Gamma | P.1 | 139 | 19% | 9% | 6 |
| Epsilon | B.1.429 | 113 | 16% | 16% | 0 |
| Delta | B.1.617.2 | 70 | 10% | 4% | 30 |
| Iota | B.1.526 | 21 | 3% | 3% | 7 |
| Beta | B.1.351 | 11 | 2% | 1% | 1 |
| Epsilon | B.1.427 | 11 | 2% | 2% | 0 |
| Eta | B.1.525 | 4 | 1% | 0% | 0 |
| Kappa | B.1.617.1 | 1 | 0% | 0% | 0 |
| Zeta | P.2 | 0 | 0% | 0% | 0 |
| Other | 49 | 7% | 20% | 0 | |
| Total | 716 | 100% | 100% | 55 |
Vaccine Breakthroughs up to 30th June 2021
| 30th June 2021 Variant | Lineage | Number of Vaccine Breakthrough Cases With Variant | Percentage of Vaccine Breakthrough Cases With Variant | Percentage of Sequences From All Covid-19 Cases With Variant |
|---|---|---|---|---|
| Alpha | B.1.1.7 | 286 | 37% | 38% |
| Gamma | P.1 | 133 | 17% | 8% |
| Epsilon | B.1.429 | 113 | 15% | 14% |
| Delta | B.1.617.2 | 40 | 5% | 2% |
| Iota | B.1.526 | 14 | 2% | 3% |
| Beta | B.1.351 | 10 | 1% | 1% |
| Epsilon | B.1.427 | 11 | 1% | 2% |
| Eta | B.1.525 | 4 | 1% | 0% |
| Kappa | B.1.617.1 | 1 | 0% | 0% |
| Zeta | P.2 | 0 | 0% | 0% |
| Other | 49 | 21% | 32% | |
| Totals | 661 | 100% | 100% |
Photo by Alex Mertz on Unsplash
** This post was originally published on September 2, 2021 **
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