Vaccines have historically been the most effective means to fight and eradicate infectious diseases. Limitations to their effectiveness, nevertheless, exist.Sometimes, protection fails because the host's immune system simply does not respond adequately or at all. Lack of response commonly results from clinical factors such as diabetes, steroid use, HIV infection or age. It also might fail for genetic reasons if the host's immune system includes no strains of B cellsthat can generate antibodies suited to reacting effectively and binding to the antigens associated with the pathogen.
उत्पादन कोटीहरू : Varicella Vaccine (Live) > समाप्त उत्पादनहरू