New Delhi, May 28 Congress leader Rahul Gandhi on Friday said that the current state of vaccination "will guarantee a third Covid-19 wave", and that Prime Minister Narendra Modi and the government have not understood the disease yet, which was evolving fast and nor do they have an inoculation strategy to prevent the future waves. Addressing the virtual press meet, Gandhi rejected the Centre's assertion that Covid management was going well till the Government of India was managing the response, and the decision-making had not been decentralised to the states. “The Congress-led Chhattisgarh government did not export the vaccines. The PM did. The buck stops with him …. Here, I am saying, that the PM is responsible for the second Covid wave. It is the result of his theatrics and lack of responsibility. At today’s pace, vaccinations will be completed in May 2024, but by then we will have multiple waves and people will remain vulnerable,” the Congress leader said defending his recent tweet where he called Covid as “Movid” in an attack on PM Narendra Modi, and expressing grave concern over 3 per cent inoculation coverage in India.