imho , only 2 vaccine stock can buy, bintai and hwgb,both is cos of the technology of the vaccine, bintai also have distributorship from SEA to australia/ NZ - thats a huge market nad infact China CDC is also pump money into generex..if china so confident of their own tech, why wanna dump money into generex?.. Also HWGB is using polio vaccine thats been around 70 years and they r doing 4th phase now..polio vaccine have long record of safety..i would be scared of china vaccines sinopharm, sinovac, all china produce vaccine is not going 3rd phase trial yet.. and even so the data can be trusted? for pfizer and moderna..i feel this new technology that messes with our DNA can cos problems in the future..the risk is high and logisticall requirement are at -70degC --- seriously?? hahaha..what if the vaccine simply 30min in the lorry no aircond..who knows if the vaccine is safe for longterm due to some variation to its condition. cansino vaccine also is funny, the result from cansino vaccine show many side effects - but china still approved it for its military use..i read cansino vaccine is similar tech to russia vaccine.. so i really doubt the safety..this my opinion