Which virus causes Swine flu? A H1N5 B H1N1 C H5N1 D H5N5 Which virus causes Swine flu? Correct Answer H1N1 Bissoy MCQ Team May 27, 2023 সাধারণ জ্ঞান Oil & Gas Co. Ltd Titas Gas Co.Ltd - Deputy Asst. Engineer - 18.02.2011