Gan added that even when vaccines become available, it will have to be given out progressively as it is not possible to vaccinate the entire nation at once.
Negotiations with various pharmaceutical companies that are conducting clinical trials are ongoing, added Gan.
An expert committee on COVID-19 vaccination set up last month will assess the data coming out of the trials and advise the ministry on its vaccination strategy, said the minister.
He said details about which vaccines will make the list and which segments of the population will receive a vaccine are still being worked out.
The Health Ministry's director of medical services, Associate Professor Kenneth Mak, noted that one vaccine candidate developed by the pharmaceutical company Pfizer was recently found to be more than 90 per cent effective.
While this is welcome news, Prof Mak said more information is needed about the Pfizer vaccine and others that are close to finishing phase three trials.
For instance, if vaccines do not provide long-lasting immunity, a patient may need repeated vaccinations instead of a single dose.
(Only the headline and picture of this report may have been reworked by the Business Standard staff; the rest of the content is auto-generated from a syndicated feed.)
Business Standard has always strived hard to provide up-to-date information and commentary on developments that are of interest to you and have wider political and economic implications for the country and the world. Your encouragement and constant feedback on how to improve our offering have only made our resolve and commitment to these ideals stronger. Even during these difficult times arising out of Covid-19, we continue to remain committed to keeping you informed and updated with credible news, authoritative views and incisive commentary on topical issues of relevance.
We, however, have a request.
As we battle the economic impact of the pandemic, we need your support even more, so that we can continue to offer you more quality content. Our subscription model has seen an encouraging response from many of you, who have subscribed to our online content. More subscription to our online content can only help us achieve the goals of offering you even better and more relevant content. We believe in free, fair and credible journalism. Your support through more subscriptions can help us practise the journalism to which we are committed.
Support quality journalism and subscribe to Business Standard.