This week’s update from Washington State showing vaccine breakthrough cases and which Sars-CoV-2 variant is causing them up to 25th August 2021. It looks like Washington State have spent the last week cataloguing Delta samples from the previous week, as very few new breakthrough cases have been recorded this week.
Although Delta breakthroughs have seemingly increased over the week, they have mostly been moved from the “other” row where they were posted last week into the Delta column this week, as we predicted they would be last week.
We will continue to reprint these figures as long as Washington State continues to publish them, but, sadly, their value is increasingly doubtful due to an obvious lag in sequencing the samples.
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
