Nauseda is planning to raise the issue at the European Council's meeting on Thursday.
"Having consulted experts, the president sees a strong need for a very clear EU-level target for achieving herd immunity," Simonas Krepsta, Nauseda's chief economic and social policy advisor, told reporters after the president's meeting with a group of health experts advising him on the pandemic.
"In the president's opinion, we should set a realistic but very ambitious target date for securing enough vaccines to vaccinate about two-thirds of the population," the advisor said, adding that Nauseda was planning to raise this issue at the EU summit.
The latest statistics showed on Tuesday morning that 50,900 people in Lithuania, or 1.82 percent of the population, had received their first coronavirus vaccine shots and 2,640 had been given the second jab.