diff --git a/lineage_notes.txt b/lineage_notes.txt
index 270fb2f4..76309a36 100644
--- a/lineage_notes.txt
+++ b/lineage_notes.txt
@@ -2618,6 +2618,7 @@ XBB.1.23	Defined by E:S68F, on 28297C branch, South East Asia
 XBB.1.24	Defined by S:F486P, on T13704C branch, from #1654
 XBB.1.25	Defined by C673T, G487T, on 28297C branch
 XBB.1.26	Defined by T10663C on 28297C branch, Canada
+XBB.1.27	Defined by S:478R, S:A890V, Mexico/US/India
 XBB.2	Defined by S:D253G, from issue #1173
 XBB.2.1	Defined by S:N764R (C23853G), two step mutation on top of C23854A (S:N764K defining of all Omicrons)
 XBB.2.2	Defined by S:Q613H
diff --git a/lineages.csv b/lineages.csv
index bec47aca..89ea73ef 100644
--- a/lineages.csv
+++ b/lineages.csv
@@ -2323634,7 +2323634,6 @@ USA/GA-EHC-6559U/2022,XBB.1
 Australia/VIC78067/2022,XBB.1
 Turkey/KSS-PFOADH4910990496/2022,XBB.1
 France/GES-HMN-22122220259/2022,XBB.1
-Mexico/OAX-LANGEBIO_IMSS_14144/2023,XBB.1
 Sweden/3306500264/2022,XBB.1
 Singapore/12864/2022,XBB.1
 Indonesia/LA-NIHRD-22-37825/2022,XBB.1
@@ -2324270,7 +2324269,6 @@ Germany/BE-RKI-I-1031142/2022,XBB.1
 USA/NY-MSK-7124/2022,XBB.1
 France/BRE-IPP-04456/2023,XBB.1
 Indonesia/JI-ITD-60378N/2022,XBB.1
-USA/TN-CDC-LC0989791/2023,XBB.1
 Indonesia/JK-NIHRD-WGS-22-32368/2022,XBB.1
 Malaysia/IMR_OS7516/2022,XBB.1
 Indonesia/JI-ITD-59779NT/2022,XBB.1
@@ -2325720,7 +2325718,6 @@ USA/HI-H2318765/2022,XBB.1
 USA/VA-VTVAS3-GSC41613/2023,XBB.1
 USA/CA-HLX-STM-UCNY3XY8M/2023,XBB.1
 Shanghai/SJTU-234389/2022,XBB.1
-Canada/AB-ABPHL-90459/2023,XBB.1
 Israel/ICH-741192259/2022,XBB.1
 USA/NY-PRL-221207_01G24/2022,XBB.1
 USA/TX-HMH-MCoV-125671/2023,XBB.1
@@ -2325739,7 +2325736,6 @@ USA/MD-CDC-LC0994081/2023,XBB.1
 Indonesia/JB-WJHL-ITB-W04996/2022,XBB.1
 USA/VA-CDC-LC0967175/2022,XBB.1
 USA/FL-CDC-813147395/2023,XBB.1
-Canada/AB-ABPHL-90801/2023,XBB.1
 USA/WI-MHDL-010118/2022,XBB.1
 Aruba/AW-RIVM-125447/2023,XBB.1
 Germany/RP-RKI-I-1106812/2023,XBB.1
@@ -2325876,7 +2325872,6 @@ Malaysia/IMR_CV05374/2023,XBB.1
 Indonesia/JK-NIHRD-36523/2022,XBB.1
 Malaysia/IMR_LF00125/2022,XBB.1
 Panama/M268754-GMI/2023,XBB.1
-Mexico/MEX_IBT_IMSS_10419/2022,XBB.1
 USA/TX-HMH-MCoV-121167/2022,XBB.1
 Italy/EMR-BO_2538/2023,XBB.1
 Denmark/DCGC-627843/2022,XBB.1
@@ -2326387,7 +2326382,6 @@ USA/CA-CDPH-FS48080386/2022,XBB.1
 Denmark/DCGC-618522/2022,XBB.1
 Netherlands/UT-RIVM-121442/2022,XBB.1
 USA/WI-ASC-210995815/2023,XBB.1
-Mexico/MEX_IBT_IMSS_10780/2023,XBB.1
 USA/NY-NYULH9972/2022,XBB.1
 Denmark/DCGC-628223/2022,XBB.1
 England/BRBR-326F5782/2023,XBB.1
@@ -2351414,7 +2351408,6 @@ USA/NY-GBW-H10-011-4369/2023,EW.3
 SouthAfrica/NICD-N51527/2023,EW.3
 SouthAfrica/NICD-N53747/2023,EW.3
 SouthAfrica/NICD-N51690/2023,EW.3
-strain,EY.1
 USA/CA-CDC-LC1022690/2023,EY.1
 Netherlands/NH-AUMC-000816/2023,EY.1
 USA/CO-CDC-QDX46612059/2023,EY.1
@@ -2351614,3 +2351607,25 @@ Portugal/PT46699/2023,EZ.1
 Portugal/INSA-46268/2023,EZ.1
 Portugal/PT46428/2023,EZ.1
 Portugal/PT46580/2023,EZ.1
+strain,XBB.1.27
+India/KA-BMCRI-1178/2023,XBB.1.27
+USA/CA-CDC-STM-4BDVQSN5J/2022,XBB.1.27
+USA/CA-CDC-STM-U6WWG7BPP/2022,XBB.1.27
+Mexico/VER-LANGEBIO_IMSS_14210/2023,XBB.1.27
+USA/TN-CDC-LC0989791/2023,XBB.1.27
+USA/VA-CAV_VAS3N_00018083_01/2023,XBB.1.27
+Mexico/CMX-INMEGEN-99-149/2023,XBB.1.27
+Mexico/OAX-LANGEBIO_IMSS_14144/2023,XBB.1.27
+England/PHEC-YY89I31/2023,XBB.1.27
+Mexico/CMX-INMEGEN-99-178/2023,XBB.1.27
+Mexico/MEX-INMEGEN-97-267/2023,XBB.1.27
+Mexico/CMX-INMEGEN-95-51/2022,XBB.1.27
+Mexico/MEX_IBT_IMSS_10780/2023,XBB.1.27
+Mexico/MEX_IBT_IMSS_10419/2022,XBB.1.27
+Canada/AB-ABPHL-90817/2023,XBB.1.27
+Canada/AB-ABPHL-90801/2023,XBB.1.27
+Canada/AB-ABPHL-90435/2023,XBB.1.27
+Canada/AB-ABPHL-90459/2023,XBB.1.27
+Canada/AB-ABPHL-90847/2023,XBB.1.27
+USA/NV-CDC-QDX46395766/2023,XBB.1.27
+Canada/AB-ABPHL-90432/2022,XBB.1.27