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<blockquote data-quote="Angela Channing" data-source="post: 297527" data-attributes="member: 33">I totally get why it might seem like that but I think it&#039;s more of a case of the scientists responding to the latest research. Originally advice was based on knowledge of the flu virus or other SARS viruses but as more research has been done specifically on Covid-19 they have been able to update the advice. Previously, there was inadequate&nbsp; research on the effectiveness of mask wearing on reducing Covid-19 spreading so it wasn&#039;t recommended. I think that was a mistake because in China they have been dealing with SARS for many years now and their people have been wearing face coverings in public spaces for some time now. However, once the research into how effective masks was to slowing Covid-19 spread the recommendation was updated. Although it might feel like flip flopping it was more of a case of responding to scientific developments.Covid vaccines are thought to be about 90% effective after 2 doses but people&#039;s immunity wanes over time and after about 6 months it drops to around 60%. Although that is still good immunity, it does mean that inoculated people will still catch Covid. A booster programme will increase immunity back up to the 90% level but the trouble is that too many people believe they are already protected and as a result take up of booster jabs as been far less than it was for the original 2 doses.</blockquote>

[QUOTE="Angela Channing, post: 297527, member: 33"] I totally get why it might seem like that but I think it's more of a case of the scientists responding to the latest research. Originally advice was based on knowledge of the flu virus or other SARS viruses but as more research has been done specifically on Covid-19 they have been able to update the advice. Previously, there was inadequate research on the effectiveness of mask wearing on reducing Covid-19 spreading so it wasn't recommended. I think that was a mistake because in China they have been dealing with SARS for many years now and their people have been wearing face coverings in public spaces for some time now. However, once the research into how effective masks was to slowing Covid-19 spread the recommendation was updated. Although it might feel like flip flopping it was more of a case of responding to scientific developments. Covid vaccines are thought to be about 90% effective after 2 doses but people's immunity wanes over time and after about 6 months it drops to around 60%. Although that is still good immunity, it does mean that inoculated people will still catch Covid. A booster programme will increase immunity back up to the 90% level but the trouble is that too many people believe they are already protected and as a result take up of booster jabs as been far less than it was for the original 2 doses. [/QUOTE]

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