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BA.4 dan BA.5 Omicron

BA.4 dan BA.5 Omicron

BA.4 dan BA.5 Omicron, Dua subvarian baru Omicron yang menyebar cepat menyebabkan lonjakan baru Covid di seluruh dunia.

pertama kali di identifikasi di Afrika Selatan dan akan segera menjadi jenis yang dominan di Eropa dan AS, kata pakar kesehatan.

Apa sebenarnya BA.4 dan BA.5 itu?

Sejak pertama kali muncul, Covid telah bermutasi atau berubah bentuk. Versi genetik baru yang terus muncul di sebut varian.

Sudah ada beberapa varian utama, seperti alfa dan delta, yang telah menyebabkan gelombang besar infeksi.

Yang terbaru yang dikhawatirkan para ahli – BA.4 dan BA.5 – sangat erat kaitannya dengan varian Omicron di balik gelombang musim dingin lalu.

Mereka di tambahkan ke daftar pemantauan Organisasi Kesehatan Dunia pada bulan Maret dan juga telah di tetapkan sebagai varian yang menjadi perhatian di Eropa.

Di mana mereka menyebar?

Mereka terlihat beredar di Afrika Selatan pada awal tahun dan sekarang tampaknya menyebar jauh lebih cepat daripada varian lainnya.

Sebagian besar negara Eropa sekarang memilikinya dan mereka tampaknya akan segera menyusul jenis Covid lainnya. Itu sudah terjadi di Portugal – BA.5 sekarang dominan di sana.

Di AS, para pejabat mengatakan mereka melihat peningkatan jumlah infeksi yang di sebabkan oleh dua subvarian baru.

Infeksi Covid di Inggris juga meningkat, didorong oleh BA.4 dan BA.5.

Australia juga telah melaporkan kasus.

Apakah mereka akan berbahaya?

Para ahli tidak yakin seberapa keras negara akan terkena dampaknya.

BA.4 dan BA.5 Omicron tidak di anggap lebih mematikan dari pada jenis Covid lainnya.

Banyak orang telah membangun kekebalan dari infeksi dan vaksinasi di masa lalu, yang membantu mengurangi risiko penyakit secara keseluruhan.

Tetapi subvarian baru tampaknya menyebar lebih mudah.

Ini sebagian karena kekebalan mungkin berkurang, tetapi juga karena mutasi yang di alami virus.

Banyak negara juga telah mencabut pembatasan Covid mereka, yang berarti orang-orang lebih banyak bercampur, yang memberi virus lebih banyak peluang untuk menyebar.

BA.4 dan BA.5 tampaknya dapat menginfeksi orang bahkan jika mereka baru-baru ini memiliki jenis Omicron lainnya.

Gelombang infeksi baru dapat menyebabkan lebih banyak rawat inap dan lebih banyak kematian.

Bagaimana kita bisa melindungi dari mereka?

Seperti varian Covid lainnya, risiko atau penyakit serius tetap tertinggi untuk orang yang berusia lanjut, atau yang memiliki kondisi kesehatan mendasar yang signifikan.

Meskipun vaksin saat ini tidak cocok, mereka masih merupakan garis pertahanan terbaik.

Mereka telah mengurangi risiko penyakit parah terhadap varian Covid utama lainnya, termasuk Delta, Alpha, Beta, dan Gamma.

Dokter mengatakan sangat penting orang mendapatkan jumlah dosis yang di sarankan untuk mendapatkan perlindungan maksimal terhadap varian yang ada dan yang muncul.

Seberapa cepat kita bisa mendapatkan vaksin baru terhadap varian?

Versi terbaru dari vaksin melawan varian Covid sudah di rancang dan diuji.

Produsen juga dapat meningkatkan produksi dengan cepat, dan regulator telah membahas cara mempercepat proses persetujuan.

Mengapa terjadi varian?

Virus membuat salinan karbon dari dirinya sendiri untuk bereproduksi, tetapi mereka tidak sempurna dalam hal itu. 

Kesalahan merayap dalam mengubah cetak biru genetik, menghasilkan versi baru dari virus.

Jika ini memberi virus keuntungan bertahan hidup, versi baru akan berkembang.

Semakin banyak peluang yang di miliki virus corona untuk membuat salinan dirinya di dalam diri kita – inangnya – semakin banyak peluang terjadinya mutasi.

baca juga: Resep Gampang Memasak Ayam Ungkep

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