sign with the words `african swine fever restricted area` sperrgebiet schweinepest

african afrikanische agriculture animal area barrier boar closed contagion danger disease domestic epidemic epizootic farm farming fence fever flu germany husbandry ill illness indicating infection infectious info information killing label locked measure outbreaks pandemic pathogen pest pet pig pork precautionary quarantine regard restricted risk safety schweinegrippe schweinepest security shut sign sperrgebiet swine veterinarian veterinary virus warning wild words zone