THE following is a summary of some recent studies on COVID-19. They include research that warrants further study to corroborate the findings and that has yet to be certified by peer review.
Omicron cannot escape body's second-line defense
A key part of the immune system's second-line defense - its T cells - are highly effective at recognizing and attacking the Omicron variant, thereby preventing most infections from progressing to critical illness, a new study shows.
Omicron's mutations help it escape from antibodies, the body's first line of defense against infection. Researchers have speculated that other components of the immune response would still target Omicron, but there has been no proof until now.
In test tube experiments, researchers in South Africa exposed copies of the virus to T cells from volunteers who had received vaccines from Johnson & Johnson or Pfizer/BioNTech or who had not been vaccinated but had developed their own T cells after infection with an earlier version of the coronavirus.
"Despite Omicron's extensive mutations and reduced susceptibility to neutralizing antibodies, the majority of T cell response, induced by vaccination or natural infection, cross-recognizes the variant," the researchers reported on Tuesday on medRxiv ahead of peer review.
"Well-preserved T cell immunity to Omicron is likely to contribute to protection from severe COVID-19," which supports what South African doctors had initially suspected when most patients with Omicron infections did not become seriously ill, they said.
The "T" stands for thymus, the organ in which the cells' final stage of development occurs.
Boosters reduce risk of Omicron household transmission
The odds that vaccinated people will catch the virus if a household member becomes infected are nearly three to four times higher with Omicron than with Delta, but booster doses reduce that risk, new findings suggest.
Researchers analyzed transmission data collected from nearly 12,000 infected households in Denmark, including 2,225 households with an Omicron infection. Overall, there were 6,397 secondary infections in the week after the first infection in the house.
After accounting for other risk factors, the rate of person-to-person spread of the virus to fully vaccinated people was roughly 2.6 times higher in Omicron households than in Delta households, the researchers reported on Monday on medRxiv ahead of peer review.
Booster-vaccinated people were nearly 3.7 times more likely to get infected in the Omicron households than in the Delta households, they found.
Looking only at Omicron households, however, booster-vaccinated people were 56% less likely to become infected compared to vaccinated people who had not received a booster.
And overall, when booster-vaccinated people were the ones who first brought home the virus, they were less likely than unvaccinated and vaccinated-but-not-boosted people to pass it to others.
Reuters
Thu Dec 30 2021
The odds that vaccinated people will catch the virus if a household member becomes infected are nearly three to four times higher with Omicron than with Delta, but booster doses reduce that risk. - REUTERS
#AWANIRingkas 5 Oktober 2024 | 9 PM
Berikut merupakan rangkuman berita setakat 9 malam, 5 Oktober 2024
1️⃣ Siasatan membabitkan 10 peruntukan undang-undang
2️⃣ KDN sahkan seorang anggota polis terlibat
3️⃣ Projek sakit dijangka siap menjelang hujung 2024
#awaniringkas
1️⃣ Siasatan membabitkan 10 peruntukan undang-undang
2️⃣ KDN sahkan seorang anggota polis terlibat
3️⃣ Projek sakit dijangka siap menjelang hujung 2024
#awaniringkas
Serangan gajah: Perhilitan terus pantau Kampung Basung
Perhilitan Terengganu akan meneruskan pemantauan di Kampung Basung di Kuala Berang bagi mengesan gajah liar yang menyebabkan kematian warga emas hari ini.
Ekonomi penjagaan berpotensi hasil pendapatan baharu untuk negeri - Saarani
Kerajaan Perak melihat potensi ekonomi penjagaan sebagai satu daripada pendapatan baharu yang berdaya maju untuk negeri itu, kata Menteri Besar Datuk Seri Saarani Mohamad.
Polis tahan pegawai tentera kerana cabul kakitangan bawahan
Seorang pegawai tentera ditahan kerana disyaki mencabul kakitangan bawahannya sebanyak beberapa kali di sebuah premis kerajaan di Kok Lanas, Kota Bharu.
ATM lakukan siasatan penuh insiden di Wisma Transit
Angkatan Tentera Malaysia (ATM) melakukan siasatan penuh berkenaan insiden kekecohan yang berlaku di Wisma Transit, Kuala Lumpur membabitkan warga Palestin baru-baru ini.
JKNK akan dapatkan bantuan negeri lain jika berlaku banjir luar jangka
Jabatan Kesihatan Negeri Kelantan (JKNK) akan mendapatkan bantuan khidmat petugas Kementerian Kesihatan (KKM) dari negeri lain sekiranya mengalami banjir luar jangka tahun ini.
PR1MA: Projek sakit dijangka siap menjelang hujung tahun ini
Kementerian Perumahan dan Kerajaan Tempatan (KPKT) memberi jaminan projek Perumahan Rakyat 1Malaysia (PR1MA) yang dikategorikan sebagai ‘projek sakit’ atau bermasalah di seluruh negara akan disiapkan menjelang hujung tahun ini.
John Legend sifatkan Siti Nurhaliza, Yura Yunita penyanyi hebat, teruja ditemani di konsert
John Legend teruja dengan kehadiran Siti dan Yura, dan akan menyampaikan lagu-lagu hitnya seperti All of Me, Ordinary People, dan Tonight.
Ibu bapa perlu luang lebih masa, interaksi bersama anak
Isteri Perdana Menteri Datuk Seri Dr Wan Azizah Wan Ismail menasihatkan ibu bapa agar meluangkan lebih masa dan berinteraksi bersama anak-anak bagi memupuk hubungan lebih harmoni.
AWANI Borneo [05/10/2024] - Kes tembak di Song | Tingkat fasiliti | Hala tuju SMJ
AWANI Borneo Sabtu, 5 Oktober 2024 bersama Jasmine Abu Bakar.
KDN sahkan seorang anggota polis terlibat kes tembakan di Song.
Rangkaian pusat kanser diperluas di Sarawak.
Sektor penting di Sabah tunjuk hasil positif, landasan tepat.
KDN sahkan seorang anggota polis terlibat kes tembakan di Song.
Rangkaian pusat kanser diperluas di Sarawak.
Sektor penting di Sabah tunjuk hasil positif, landasan tepat.