Volume 25, Number 5—May 2019
Research
Infectious Dose of African Swine Fever Virus When Consumed Naturally in Liquid or Feed
Table 2
Summary of results for pigs orally exposed to ASFV in liquid or feed to determine the infectious dose of ASFV when consumed naturally*
Dose ASFV, TCID50 |
Liquid media |
Plant-based feed |
|||||
No. tested |
No. positive |
% Positive |
No. tested |
No. positive |
% Positive |
||
100 | 8 | 3 | 37.5 | – | – | – | |
101 | 9 | 4 | 44.4 | – | – | – | |
102 | 8 | 6 | 75 | – | – | – | |
103 | 6 | 5 | 83.3 | 5 | 0 | 0 | |
104 | 3 | 3 | 100 | 5 | 2 | 40 | |
105 | – | – | – | 9 | 4 | 44.4 | |
106 | – | – | – | 8 | 2 | 25 | |
107 | – | – | – | 5 | 2 | 40 | |
108 | – | – | – | 2 | 1 | 50 |
*ASFV, African swine fever virus; TCID50, 50% tissue culture infectious dose; –, no pigs tested.