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The testing and modification of a commercially available transport medium for the transportation of pure cultures of Haemophilus paragallinarum for serotyping
2004
Bragg, R.R. | Jansen van Rensburg, P. | Van Heerden, E. | Albertyn, J. (Free State Univ., Bloemfontein (South Africa). Microbial, Biochemical and Food Biotechnology Dept.)
Virulence of South African isolates of Haemophilus paragallinarum. Part 3: experimentally produced NAD-independent isolate
2002
Taole, M. | Albertyn, J. | Van Heerden, E. | Bragg, R.R. (Free State Univ., Bloemfontein (South Africa). Microbiology Dept.)
Virulence of South African isolates of Haemophilus paragallinarum. Part 1: NAD-dependent field isolates
2002
Bragg, R.R. (Free State Univ., Bloemfontein (South Africa). Microbiology and Biochemistry Dept.)
Isolation of serovar C-3 Haemophilus paragallinarum from Zimbabwe: A further indication of the need for the production of vaccines against infectious coryza containing local isolates of H. paragallinarum
2002
Bragg, R.R. (Free State Univ., Bloemfontein (South Africa). Microbiology and Biochemistry Dept.)
Changes in the incidences of the different serovars of Haemophilus paragallinarum in South Africa: a possible explanation for vaccination failures
1996
Bragg, R.R. | Coetzee, L. (Pretoria Univ., Onderstepoort (South Africa). Dept. of Poultry Diseases) | Verschoor, J.A.
Evidence of possible evasion of protective immunity by NAD-independent isolates of Haemophilus paragallinarum in poultry
2004
Bragg, R.R. (Free State Univ., Bloemfontein (South Africa). Microbial, Biochemical and Food Biotechnology Dept.)
Limitation of the spread and impact of infectious coryza through the use of a continuous disinfection programme
2004
Bragg, R.R. (Free State Univ., Bloemfontein (South Africa). Microbial, Biochemical and Food Biotechnology Dept.)
Virulence of South African isolates of Haemophilus paragallinarum. Part 2: Naturally occuring NAD-independent field isolates
2002
Bragg, R.R. (Free State Univ., Bloemfontein (South Africa). Microbiology and Biochemistry Dept.)
Effects of transformation on the hemagglutinins of Haemophilus paragallinarum
1995
Bragg, R.R. | Purdan, G. | Coetzee, L. (Pretoria Univ., Onderstepoort (South Africa). Dept. of Poultry Diseases) | Verschoor, J.A.
Genetic organisation of the capsule transport gene region from Haemophilus paragallinarum
2004
De Smidt, O. | Albertyn, J. | Bragg, R.R. | Van Heerden, E. (Free State Univ., Bloemfontein (South Africa). Microbial, Biochemical and Food Biotechnology Dept.)
