Table 3 Hospitalisations (WHO score >= 4) by SARS-CoV-2 lineage and WHO clinical progression score.

From: Efficacy of ChAdOx1 nCoV-19 (AZD1222) vaccine against SARS-CoV-2 lineages circulating in Brazil

 

ChAdOx1 nCoV-19

Control

WHO clinical progression score

4

5

6

10

4

5

6

10

Secondary cases

(>21 days after dose 1, <15 days after dose 2)

Undetermined/no swab

0

0

0

0

1

2

0

1

B.1.1.33

0

0

0

0

1

0

0

0

P.1 (Gamma)

0

0

0

0

1

0

0

0

 

Total

0

6

Primary cases

 > =15 days after dose 2

Undetermined/no swab

0

1

0

0

3

3

4

1

B.1.1.28

0

0

0

0

0

3

1

0

P.1 (Gamma)

0

0

0

0

0

1

0

0

P.2 (Zeta)

0

0

0

0

1

0

1

0

 

Total

1

18

  

VE 95% (95% CI 61%, 99%)

  1. *Undetermined lineage are those where a lineage could not be assigned due to low viral load or degraded RNA.
  2. 4 = Hospitalised; no oxygen therapy, 5 = Hospitalised; oxygen by mask or nasal prongs, 6 = Hospitalised; oxygen by NIV or high flow, 10 = dead.