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Table 2 Number of chickens positive for l NDV and LPAIV in oropharyngeal (OP) and cloacal (CL) swabs in single and co-infected groups

From: Virus interference between H7N2 low pathogenic avian influenza virus and lentogenic Newcastle disease virus in experimental co-infections in chickens and turkeys

Virus detected

 

Group

Days post inoculation

Day 0

Day 3

1

2

3

4

6

8

10

Totalb

l NDV

OP

l NDV

 

10/10a

10/10

10/10

10/10

10/10

7/10

9/10

66

LPAIV

 

ND

ND

ND

ND

ND

ND

ND

-

l NDV + LPAIV

 

10/10

10/10

10/10

10/10

10/10

10/10

10/10

70

LPAIV

l NDV

10/10

10/10

10/10

10/10

10/10

10/10

4/10**

64

CL

l NDV

 

2/10

2/10

2/10

2/10

0/10

1/10

1/10

10

LPAIV

 

ND

ND

ND

ND

ND

ND

ND

-

l NDV + LPAIV

 

2/10

0/10

1/10

2/10

0/10

0/10

2/10

7

LPAIV

l NDV

3/10

0/10

4/10

4/10

3/10

0/10

0/10

14

LPAIV

OP

l NDV

 

ND

ND

ND

ND

ND

ND

ND

-

LPAIV

 

10/10

10/10

10/10

10/10

10/10

8/10

4/10

62

l NDV + LPAIV

 

10/10

10/10

10/10

10/10

9/10

9/10

6/10

64

l NDV

LPAIV

10/10

10/10

10/10

10/10

10/10

10/10

2/10

62

CL

l NDV

 

ND

ND

ND

ND

ND

ND

ND

 

LPAIV

 

2/10

1/10

10/10

3/10

3/10

3/10

2/10

24

l NDV + LPAIV

 

4/10

1/10

5/10*

4/10

4/10

3/10

3/10

24

l NDV

LPAIV

3/10

4/10

8/10

8/10*

2/10

1/10

1/10

27

  1. In groups sequentially infected, the day post-inoculation (dpi) is based on the last virus given.
  2. aNumber of positive birds/total number of birds sampled at each time point.
  3. bTotal number of positive swabs.
  4. ND, No data.
  5. *Significant difference for number of positive chickens by qRT-PCR compared to single virus infected groups, (*, P < 0.05; **, P < 0.01).
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Veterinary Research

ISSN: 1297-9716