Asian jet fuel refining margins inched up on Tuesday as feedstock crude prices slumped, but the cracks held close to their weakest levels in over 2-1/2 months as the new Omicron coronavirus variant threatens a recovery in air travel. Refining profit margins, also known as cracks, for jet fuel were at $7.10 per barrel over Dubai crude during Asian trading hours, compared with Monday's $6.92 a barrel, which was the lowest since Sept. 15. The heavily mutated and potentially more contagious new variant, first reported in southern Africa, has now been detected in several countries including Australia, Belgium, Britain, Canada, Denmark, France, Germany, Hong Kong, Israel, Italy, and the Netherlands. read more Hong Kong expanded a ban on entry for non-residents from several countries, the latest to expand travel curbs after Israel and Japan announced border closures to all foreign travellers, while Britain and Australia also have tightened rules for all arrivals in response to the new variant. read moreHundreds and thousands of would-be travellers, who made travel plans as border curbs eased and were eagerly waiting to see their families, are now considering to cancel or delay their trips in response to fresh curbs prompted by the Omicron variant. read more Cash differentials for jet fuel were at a premium of 35 cents per barrel to Singapore quotes. SINGAPORE CASH DEALS - No gasoil deals, no jet fuel trades OTHER NEWS - Oil prices tumbled more than 3% on Tuesday after Moderna's CEO cast doubt on the efficacy of COVID-19 vaccines against the Omicron coronavirus variant, spooking financial markets and adding to worries about oil demand. - Indonesia's 2022 unblended biodiesel consumption is seen at 10 million kilolitres (KL), up from the targeted 9.2 million KL this year, a document presented by senior energy ministry official, Dadan Kusdiana, showed on Tuesday. This year's consumption may also surpass the target as demand for fuel recovered from the impact of the coronavirus pandemic, Dadan said. ASSESSMENTS MID-DISTILLATES CASH ($/T) ASIA CLOSE Change % Change Prev Close RIC Spot Gas Oil 0.5% 79.55 -2.94 -3.56 82.49 GO 0.5 Diff -0.78 -0.03 4.00 -0.75 Spot Gas Oil 0.25% 79.8 -2.91 -3.52 82.71 GO 0.25 Diff -0.53 0 0.00 -0.53 Spot Gas Oil 0.05% 80.34 -2.91 -3.50 83.25 GO 0.05 Diff 0.01 0 0.00 0.01 Spot Gas Oil 0.001% 80.58 -2.91 -3.49 83.49 GO 0.001 Diff 0.25 0 0.00 0.25 Spot Jet/Kero 78.27 -2.36 -2.93 80.63 Jet/Kero Diff 0.35 0.15 75.00 0.2 For a list of derivatives prices, including margins, please double click the RICs below. Brent M1 Gasoil M1 Gasoil M1/M2 Gasoil M2 Regrade M1 Regrade M2 Jet M1 Jet M1/M2 Jet M2 Gasoil 500ppm-Dubai Cracks M1 Gasoil 500ppm-Dubai Cracks M2 Jet Cracks M1 Jet Cracks M2 East-West M1 East-West M2 LGO M1 LGO M1/M2 LGO M2 Crack LGO-Brent M1 Crack LGO-Brent M2 Reporting by Koustav Samanta; Editing by Aditya Soni Our Standards: The Thomson Reuters Trust Principles.