Help on hand: Ng and Chung receiving assistance from those on duty at the Sunway Pyramid Convention Centre PPV. — IZZRAFIQ ALIAS/The Star PETALING JAYA: Walk-in Covid-19 vaccinations for senior citizens aged 60 and above kicked off to a smooth start at several inoculation centres (PPV) across Klang Valley. Among those who walked in for their vaccinations were accountant Ng Kim Hong, 70, and his wife, Chung Nyuk Lin, 64. “I walked in expecting a long queue but I didn’t experience any. It was less than an hour and people are very helpful,” said Ng, adding that it was a very smooth process.