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influenza subtypes. The vaccines each season are created by researchers who basethe vaccine makeup on the data and the trends and make their predic"on based onthat and then the vaccines are given out and it is not 100 percent effec"ve becauseyou could recieve the flu shot but s"ll get it if you are exposed to a strain that was nota part of the composi"on makeup in the vaccine. It is possible to receive a flu vaccine and yet (unfortunately) s!ll get the flu inthe same season if you are exposed to a viral strain that was not included inthe vaccine. There are a large number of variants and the flu vaccine is unableto vaccinate against all subtypes. Medical researchers predictand thendistribute flu vaccines based current trends and the available data rela!ve tothe most common circula!ng strains. Unfortunately, this model is not always100% accurate.2 / 2 ptsQues!on 28True or False. The viral capsid of HIV is cone shaped and contains ~2,000 copies of theviral protein p24.True Correct!False 2 / 2 ptsQues!on 29The HIV surface glycoprotein gp41 binds what host cellular receptor?CD4 CXCR4 Correct!Correct!HIV gp41 binds to the receptor CXCR4CD3 CXCR5 Your Answer:5 / 5 ptsQues!on 30An individual infected with HIV is placed on an"-retroviral medica"on. What is thegeneral purpose of this medica"on? The purpose of this medica"on is to stop the replica"on and or rapid produc"on ofthe virus. Without treatment, it is most likely that this will progress into AIDS.Answer: As the name suggests, an!-retrovirals are intended to inhibit (an!)the life cycle of retroviruses (retro). By inhibi!ng steps in the HIV’s lifecycle,an!-retroviral medica!ons effec!vely block the produc!on of new viruspar!cles and lower the viral load of the pa!ent.Quiz Score: 97out of 100"PreviousNext#