The country recorded 10,016 new infections on Monday, bringing the overall tally to 731,894, with deaths at 13,186, one of the highest caseloads in Asia.
His government has said Sunday's killings were lawful and legitimate operations, but has promised a full investigation.
We are deeply worried that these latest killings indicate an escalation of violence, intimidation harassment and 'red tagging' of human rights defenders.
"The president's 'kill, kill, kill' order is legal because it was directed at armed rebels," his spokesman Harry Roque said in a briefing, adding the government would still investigate the incident.
Activists said the raids were reminiscent of police operations in which thousands of people have been killed as part of Duterte's signature war on drugs.
Despite having one of the highest number of coronavirus infections in Asia, the Philippines will be the last Southeast Asian nation to receive its initial set of vaccines.
It covers the creation of a 500 million pesos ($10.26 million) indemnity fund to cover compensation for potential serious adverse effects stemming from the doses' emergency use.
Duterte has said the United States should pay more if it wants to maintain the VFA, which he unilaterally cancelled last year in an angry response to an ally being denied a US visa.
"I have not yet decided on what to do, to abrogate or renew," Duterte said in a late-night televised address on Wednesday. "I want to hear the people. I want narratives to come."
The Southeast Asian nation was at risk of returning to a Financial Action Task Force "grey list" which could delay foreign investment and make remittances from millions of Filipinos overseas.
Consistent with its foreign policy, the state shall extend cooperation in transnational investigations and prosecutions of persons involved in money laundering activities wherever committed.
A recovery hinges on the government's plan to vaccinate as many as 70 million Filipinos, or two-thirds of the population, this year though supply could delay the timeline.
Philippines President Rodrigo Duterte in March imposed one of the world's longest and strictest lockdowns to contain the virus.
"As a friend of the Philippines and your closest neighbour, we will firmly stand with the people of the Philippines until the defeat of this virus," Wang said.
Duterte had offered himself up as a guinea pig for the very first jab, expressing "huge trust" in the vaccine, despite growing scepticism about its effectiveness.
Nations like France and South Korea began resuming face-to-face classes as they got their outbreaks under control, but Philippine authorities see the risk as too great.