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Table 4 Seroprotection in prefrail and frail subjects, and in all study subjects before and 4 weeks after influenza vaccination

From: Influenza vaccine response in community-dwelling German prefrail and frail individuals

Vaccine strain

 

Prefrail (n = 48) n/N (%)

Frail (n = 25) n/N (%)

All (n = 73) n/N (%)

p value (prefrail vs. frail)

A/California/7/2009 (H1N1)

Before

26/48 (54.2)

8/25 (32.0)

34/73 (46.6)

0.12

After

42/48 (87.5)

20/25 (80.0)

62/73 (84.9)

0.61

A/Texas/50/2012 (H3N2)

Before

29/48 (60.4)

18/25 (72.0)

47/73 (64.4)

0.47

After

43/48 (89.6)

22/25 (88.0)

65/73 (89.0)

1.00

B/Massachusetts/2/2012

Before

5/48 (10.4)

4/25 (16.0)

9/73 (12.3)

0.75

After

15/48 (31.3)

8/25 (32.0)

23/73 (31.5)

1.00

  1. Data are numbers of seroprotected (n)/total (N) and % of seroprotected subjects in parentheses; “Before” refers to baseline samples (i.e. 4 weeks before vaccination) and “After” to 4 weeks after vaccination