(File photo) MANILA - Despite studies showing the Omicron variant to be a "milder strain" of Covid-19, Malacanang reminded the public Monday not to be complacent as other more lethal strains of the coronavirus, such as Delta, continue to exist. Acting presidential spokesperson and Cabinet Secretary Karlo Nograles made this remark after the Philippines saw 4,600 new Covid-19 cases on Sunday the highest recorded in over two months. The Inter-Agency Task Force for the Management of Emerging Infectious Diseases (IATF-EID) earlier raised the alert level status in Metro Manila to Alert Level 3 until January 15 amid an increase in Covid-19 cases and the detection of 14 local Omicron cases. "We're focusing so much on Omicron, we're forgetting that Delta is still around. Right now, nagspe-speculate tayo na 'Omicron na siguro 'to, ang taas ang bilang' (we are speculating that 'This is probably Omicron since there are high numbers). We have to remember Del