Table 1
Taxonomy of swine coronaviruses
| Order: | Nidovirales | |
| Family: | Coronaviridae | |
| Subfamily: | Coronavirinae | |
| Genera: | Alphacoronavirus | PEDV |
| TGEV | ||
| PRCV | ||
| Betacoronavirus | PHEV | |
| Deltacoronavirus | PDCoV |
Fig. 1
The structure of the PEDV virion and molecular sizes of each structural protein (17)
Table 2
Survival of the PED virus in different samples
| Sample | Temperature | Survival time |
|---|---|---|
| Slurry | 4°C | 28 days |
| Faeces-contaminated dry feed | 25°C | 7 days |
| Faeces-contaminated wet feed | 25°C | 14 days |
| Faeces-contaminated wet feed mixture | 25°C | 28 days |
Table 3
Resistance of the PED virus in different pH values
| pH value | Temperature | Stability of PEDV |
|---|---|---|
| pH 5–9 | 4°C | Stable |
| pH 6.5–7.5 | 37°C | Stable |
| pH < 4 | 37°C | Inactivated |
| pH > 9 | 37°C | Inactivated |
Fig. 2
Countries in Europe where the PED virus and/or specific antibodies have been confirmed since 1970 (Austria, Belgium, Bulgaria, the Czech Republic, France, Germany, the UK, Hungary, Italy, the Netherlands, Portugal, Slovenia, Switzerland, and Ukraine)