[evan_au (OP)]

I heard of one vaccine trial in monkeys which they labelled a "success": Reportedly it produced antibodies in the monkeys, but the monkeys were shedding virus from their noses... (I presume this was after a viral challenge?)

Could a person who has been vaccinated then go and see their grandmother, only to infect her?

Does this indicate that the vaccine was not targeting the nasal passages?
- Could the virus test be fooled by the residual vaccine?
- Or was the virus test fooled by residual virus from the viral challenge?

For those vaccines using a different virus as a carrier (eg a monkey virus), could the carrier virus possibly infect immune-suppressed people?

Should we expect that a vaccine protects the person who is vaccinated, and also the people with whom they will later come into contact?

[alancalverd]

A vaccine will eventually prevent the subject from becoming a good host, but it won't kill the existing lodgers much faster than the body's normal immune system.

It is hard to see what value you will get from stimulating the immune system of a subject who doesn't have one.

The only people worth vaccinating are those who are in good health and have never been infected.

[Petrochemicals]

Mass vaccination has protected by herd immunity, the virus dies out by lack of hosts like measles

Targeted vaccination works by immunising the contacts someone has had, such as E bola.

Risky behavior will only be seen in thoes that are vunerable, by them giving up there vigilance and common sense. You are quite clearly an unbeliever in Boris.

https://www.independent.co.uk/news/uk/home-news/coronavirus-woman-beach-dorset-tesco-bbc-news-a9521556.html

Edit:

No the risky behaviour will have all been enacted by then evan.