| What is the best type of protection? |
|---|
| Is sterilizing immunity the only approach or would disease reduction, without altering disease transmission work? |
| How to achieve equitable global distribution? |
| Is human challenge part of the pathway to a licensed product? |
| What is the risk of immunopathology? |
| How long will protection last after natural infection or vaccination? |
| Can better immunogenicity be achieved with vaccination than after natural infection? |
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