Swine pox, which belongs to the pox disease complex, is caused by two antigenically different poxviruses .
猪痘属于痘病群，是由两种抗原上不同的痘病毒引起的。
It is estimated that more than 90 antigenically different strains of known types of respiratory viruses cause the common cold syndrome[4].
据估计，在已知的呼吸道病毒中有90种以上抗原不同的菌株能引起感冒综合征。
It is estimated that more than 90 antigenically different strains of known types of respiratory viruses cause the common cold syndrome[4].
据估计，在已知的呼吸道病毒中有90种以上抗原不同的菌株能引起感冒综合征。
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