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Table 3 Summary of patient and treatment characteristics, and complications believed to be associated with antiviral resistance in the reviewed case reports

From: Systematic review of influenza resistance to the neuraminidase inhibitors

Study

Period

Flu type

Mutation

Proph/ Treat

Competent/ Compromised

In/Out Patient

Age

Days to resistance detection

Complications associated with resistance

Oseltamivir resistance

Baz52

2005-2006

H3N2

E596G

E119V

I222V

I223V

Treat

Compromised

In

4 m

14

Respiratory complications, prolonged viral shedding (about 90 days)

Baz52

2009

H1N1

H275Y

Postexp Proph

Competent

Out

59y

8

None. Recovered after 2 weeks

Campanini55

2009

H3N2

H274Y

Treat

Compromised

In

2y

18

42 days to resolution of flu symptoms

Cane56

2010

H1N1

H275Y

Treat

Compromised

In

3y

NA

1 month to resolution of flu symptoms

CDC-Weekly(1)57

2009

H1N1

H275Y

I223V

Proph

Competent

Out

Teens

27

None ("uneventful recovery")

CDC-Weekly(1)57

2009

H1N1

H275Y

I223V

Proph

Competent

Out

Teens

14

None ("uneventful recovery")

CDC-Weekly(2)48

2009

H1N1

H275Y

Treat

Compromised

In

Teens

30

2 months to recovery

CDC-Weekly(2)48

2009

H1N1

H275Y

Treat

Compromised

In

40y

30

2 months to revovery, prolonged neutron-penia and protracted bone marrow recovery, neutropenic fever, coagulase-negative Staphylococcus bacteremia, and Pneumocystis

Couturier(1)59

2009

H1N1

H275Y

Treat

Compromised

In

69y

9

Renal function declined. Died after 17 days.

Couturier(2)59

2009

H1N1

H275Y

Treat

Compromised

In

66y

21

Recovered after 1 month. Caught fever again after 3 months and died.

Couturier(3)59

2009

H1N1

H275Y

Proph

Competent

Out

36y

NA

None

De Jong54

2005

H5N1

H274Y

Treat

Competent

In

13y

5

Patient died. Suffered from hypoxia and pneumonia

Dulek60

2009

H1N1

H275Y

Treat

Compromised

In

18 m

22

52 days of viral shedding, progressive pulmonary disease

Gaur61

2009

H1N1

H275Y

Treat

Compromised

In

10y

14

None reported

Glikman62

2009

H1N1

H275Y

Treat

Compromised

In

11y

13

Prolonged fever (> 21 days)

Hill-Cawthorne63

2009

H1N1

H275Y

Treat

Compromised

Out

56y

20

Prolonged fever and cough (2 months)

Ison(1)64

2001

NA

Asp198Asn

Aer285Ala

Proph

Compromised

In

2y

42

Continued rhinorrhea and dry cough, progressive respitatory distress, gastrointestinal bleeding. Eventually died.

Ison(2)64

2002

H3N2

Arg142Gly

Tyr195Phe

Treat

Compromised

In

63y

90

Prolonged cough and nasal congestion

Ison(3)64

2003

H3N2

Glu119Val

Ser31Asn

Treat

Compromised

In

60y

NA

Progressive respiratory compromise and pneumonia, continued respiratory failure. Died of haemorrhagic stroke.

Le53

2005

N5N1

H274Y

Both

Competent

Out

14y

4

None. Recovered after 2 weeks.

Memoli65

2009

H1N1

Amino-acid position 245-248

Treat

Compromised

In

43y

5

None. Recovered after 2 weeks.

Nguyen**66

2009

H1N1

H27Y

Treat

Compromised

In

14y

17

Died of complications after 2 months

   

I223R

      

Rousset**67

2009

H1N1

H275Y

Treat

Compromised

In

24y

6

Patient died at day 140

Speers68

2009

H1N1

H275Y

Treat

Compromised

In

38y

3

None. Eventually died

Thabet69

2009

H1N1

H274Y

Treat

Compromised

In

3y

10

None reported.

Van der Vries*70

2009

H1N1

H275Y

Treat

Compromised

In

5y

7

Resolutions of symptoms after 3 months

Zanamivir resistance

Gubareva16

1998

NA

152Argr-Lys

Treat

Compromised

In

18 m

8

Not resolved, patients died.

Van der Vries*70

2009

H1N1

I223R

Treat

Compromised

In

5y

56

Resolutions of symptoms after 3 months

  1. * patient was treated with oseltamivir first, zanamivir second, and developed resistance to both antivirals
  2. ** patient also had reduced sensitivity to zanamivir