There's a lot of room between 95% effective and useless. From everything I've read the vaccines are still a significant help, especially for preventing severe cases, even if they are less effective than against previous waves.
Those percentages don't tell the whole story. Even when the vaccine doesn't match the circulating strains closely enough to prevent infection, it typically mitigates symptom severity at least a little. For some patients that can be the difference between life and death.
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