variants, they are pretty constant viruses, the ones that we have seen a decade or two ago, is the same measles we are seeing now. with regard to current viruses, the durability of protection from history, we know from the common cold coronaviruses, is not very long, so you can get reinfected with the same virus and it is particular problematic when the virus changes a little. like the variance we have seen. so when directly answering your question, i would not be surprised if we do require periodically getting boosted. that might take the form of the seasonal influenza vaccines, where once a year you upgrade the vaccine and you recommend that people get vaccinated. i would not be surprised if that is what we are going to see with covid in the coming years. going to see with covid in the coming years- going to see with covid in the coming years. going to see with covid in the cominu ears. , . , coming years. there is a grim number that is almost coming years. there is a grim number
/PRNewswire/ Seqirus, a global leader in influenza prevention and a business of CSL Limited (ASX:CSL), today announced the renewal of a five-year agreement.