Forschungsartikel
Sero-conversion of Avian Influenza Virus Subtype H9N2 in Non-Vaccinated Commercial Poultry Flocks
Naseem Fawad, Zahid Hussain, Sohail Manzoor, Saad Rahman, Najam-ul-Islam, Muhammad Mukhtar, Asgher Ali, Halima Sadia, Syed Abbas Ali, Malik Muhammad Nawaz, Fraz Munir Khan, Farhan Afzal and Muhammad Asif