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ASF -survivors’ sera do not inhibit African swine fever virus replication in vitro Cover

ASF -survivors’ sera do not inhibit African swine fever virus replication in vitro

Open Access
|Mar 2022

Figures & Tables

Fig. 1

Evolution of viraemia during a previously conducted experiment showing the comparison between survivor pigs (coloured and hollow symbol) and selected pigs with acute or subacute form of ASF (black solid symbol) (31). Cq - quantification cycle; dpi – days post inoculation
Evolution of viraemia during a previously conducted experiment showing the comparison between survivor pigs (coloured and hollow symbol) and selected pigs with acute or subacute form of ASF (black solid symbol) (31). Cq - quantification cycle; dpi – days post inoculation

Fig. 2

ASFV growth kinetics in the presence of selected sera at 10% and 20% concentrations. Error bars indicate standard deviation. dpi – days post inoculation
ASFV growth kinetics in the presence of selected sera at 10% and 20% concentrations. Error bars indicate standard deviation. dpi – days post inoculation

Fig. 3

Mean differences in Cq values between 0 dpi and 7 dpi recorded in selected sera and controls (FBS) at 10% and 20% concentrations. Error bars indicate standard deviation. ** – statistically significant (P < 0.01); ns – not significant
Mean differences in Cq values between 0 dpi and 7 dpi recorded in selected sera and controls (FBS) at 10% and 20% concentrations. Error bars indicate standard deviation. ** – statistically significant (P < 0.01); ns – not significant

ASFV DNA detection and anti-ASFV antibody detection and titre in selected samples

Serum/SampleBlood qPCR Cq (±SD)Serum qPCR CqAntibodies (ELISA)Antibody titre (log10/mL)
Pig#132.3 (±1.7)NEGPOS5.01
Pig#231.7 (±1.4)34.7*POS5.31
WB#1NEGNEGPOS5.51
WB#2NEGNEGPOS5.51
WB#3NEGNEGPOS5.21

Characteristics of the animals from which the sera used in the study were obtained

Serum/SampleSpeciesSexAgeClinical symptomsGross lesions
Pig#1Domestic pigMale9 weeksFever, dyspnoea joint swelling,n/d
Pig#2Domestic pigMale9 weeksModerate feverEnlargement/hyperaemia of submandibular lymph nodes
WB#1Wild boarMale18 monthsn/an/d
WB#2Wild boarFemale18 monthsn/an/d
WB#3Wild boarMale24 monthsn/an/d

Haemadsorption assay results in the presence of selected sera at 20% concentration

dpi
Serum/sample1234567
FBS++++++++++++
Pig#1
Pig#2 *++++++++++
WB#1
WB#2
WB#3
Language: English
Page range: 21 - 27
Submitted on: Dec 22, 2021
Accepted on: Mar 8, 2022
Published on: Mar 25, 2022
Published by: National Veterinary Research Institute in Pulawy
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2022 Marek Walczak, Małgorzata Juszkiewicz, Krzesimir Szymankiewicz, Anna Szczotka-Bochniarz, Grzegorz Woźniakowski, published by National Veterinary Research Institute in Pulawy
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.