PETALING JAYA: Feeling boosted by the protection offered by the vaccine, many Covid-19-conscious senior citizens say they are receptive to taking a fourth dose. Leong King Soon, 62, and his wife Barbara Teoh, 60, have hypertension and diabetes respectively and with their comorbidities, they are among the senior citizens now eligible to get a fourth shot of the Covid-19 vaccine. Leong, who took his first booster in December, said he and his wife have so far not contracted Covid-19.“ I have been i