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Table 1 2009/H1N1 Influenza viruses used in this study

From: The 2009 pandemic (H1N1) viruses isolated from pigs show enhanced pathogenicity in mice

Influenza virus strains

Name in study

GenBank ID

Source

TCID50

MLD50a

A/swine/Nanchang/3/2010 (H1N1)

3/10

JF275917-JF275924

Tracheal mucus

10-5.5

103TCID50

A/swine/Nanchang/5/2010 (H1N1)

5/10

JF275933-JF275940

Tracheal mucus

10-3.2

NCb

A/swine/Nanchang/6/2010 (H1N1)

6/10

JF275941-JF275948

Tracheal mucus

10-4.4

NC

A/swine/Nanchang/F9/2010 (H1N1)

F9/10

JF275925-JF275932

Lung tissue

10-4.48

102.98TCID50

A/Liaoning /14/2009(H1N1)

LN/09

KC683492-KC683499

Nasal swab

10-5.5

NC

  1. aThe 50% mouse lethal dose (MLD50) was determined by intranasally inoculating groups of ten mice with serial 10-fold dilutions of each virus in a final volume of 50 μL and calculated by the method of Reed and Muench [25].
  2. bNC indicates the MLD50 of the strains could not be counted due to low mortality or no lethality for mice.