Los nuevos casos globales de COVID-19 bajaron la semana pasada tras casi dos meses de ascensos, aunque la Organización Mundial de la Salud (OMS) pide no bajar la guardia ante el avance de la variante ómicron, que lentamente comienza a sustituir a la delta, la gran dominante en la pandemia este año.
Del 6 al 12 de diciembre se registraron en el planeta cuatro millones de casos de COVID-19, un 5 % menos que en la semana anterior, mientras que las muertes, cuya curva ha sido relativamente estable desde octubre, cayeron un 10 % hasta 47 mil, de acuerdo con el último informe epidemiológico de la OMS.
Las cifras dan cierto respiro tras semanas de alarma por el rápido aumento de casos en Europa (donde los contagios bajaron un 7 % en los siete días estudiados) y por la preocupación inicial que desató el descubrimiento de la nueva variante ómicron, aunque la OMS insiste en no bajar la guardia.
El director general de la organización, Tedros Adhanom Ghebreyesus, advirtió en su última rueda de prensa contra una excesiva relajación ante informaciones de prensa y estudios médicos que ligan la variante ómicron sobre todo a casos leves de COVID-19.
«Hemos visto antes que subestimar este virus es peligroso», subrayó Tedros, quien insistió en que «incluso si la ómicron causa menos casos graves, un fuerte aumento de los casos (al ser más contagiosa) puede nuevamente colapsar sistemas sanitarios no suficientemente preparados».
Delta cede lentamente ante ómicron
En el último informe epidemiológico de la OMS, se advierte la «pugna» entre la variante delta, que ha dominado en la pandemia este año, con la ómicron, aún presente en relativamente pocos casos de laboratorio pero que poco a poco va avanzando.
La delta, que a mediados de 2020 estaba ya en más de la mitad de los casos globlales y que en noviembre llegó a concentrar un 99,8 % de los casos secuenciados, ha bajado ese porcentaje al 99,2 % en la última medición realizada por la red global de laboratorios GISAID, que colabora con la OMS.
Es la primera semana desde que la variante delta fue considerada como «preocupante» por la OMS, en abril de este año, en la que su porcentaje en los casos de laboratorio baja, destacó la organización en el informe semanal.
De los 879 mil casos secuenciados en laboratorio por la red GISAID en los últimos 60 días, una gran mayoría (872.000) aún fueron de la variante delta, pero la ómicron ya representó tres mil 755 casos (0,4 %), cuando hace una semana ese porcentaje era del 0,1 %, lo que indica una rápida progresión.
La variante ómicron se está expandiendo «a un ritmo que no habíamos visto en ninguna de las cepas anteriores», advirtió al respecto Tedros, tras subrayar que ya se ha confirmado su presencia en al menos 77 países, aunque «probablemente ya está también en los que aún no ha sido detectada».
Ya no sólo entre viajeros
El informe epidemiológico semanal de la OMS también subraya que aunque la mayoría de los casos de ómicron identificados desde noviembre en más de 70 países están relacionados con viajes, ya comienza a haber focos de contagio en una misma comunidad.
Las actuales evidencias, añade el estudio, parecen indicar que la variante ómicron tiene ventajas evolutivas sobre delta a la hora de transmitirse y lo está haciendo más rápido.
En su análisis de ómicron, la OMS reitera que la variante parece afectar a la efectividad de las vacunas contra la infección y la transmisión, y que sobre todo parece claro que aumenta con ella el riesgo de reinfección (la posibilidad de que una persona que ha tenido COVID-19 vuelva a padecerlo).
Estudios preliminares independientes de la OMS han mostrado que la ómicron reduce la protección contra la reinfección en cuatro de las principales vacunas anticovid que han estudiado este aspecto: las producidas por Pfizer-BioNTech, Moderna, AstraZeneca y Johnson & Johnson.
La variante no parece, sin embargo, afectar a las pruebas PCR de detección del virus, lo que puede ayudar al seguimiento de su avance, mientras que los tratamientos contra casos graves o críticos de COVID-19 «deberían seguir siendo efectivos» contra ómicron, indica la OMS.
Por: Agencia
This is the appropriate weblog for everyone who wishes to discover this topic. You recognize a great deal its virtually not easy to argue together with you (not too When i would want…HaHa). You actually put a brand new spin using a topic thats been written about for years. Fantastic stuff, just fantastic!
very good put up, i certainly love this web site, keep on it
Pourquoi ne pas noter les valeurs dites la semaine passées via l’état national? Au moins on aurait la capacité discuter selon les véritables chiffres:
I am sure this piece of writing has touched all the internet
users, its really really fastidious paragraph on building up new webpage.
Great post. I was checking constantly this blog and I am impressed!
Extremely useful information particularly the last part 🙂 I care for
such info a lot. I was looking for this certain info for
a long time. Thank you and best of luck.
Whats up are using WordPress for your blog platform?
I’m new to the blog world but I’m trying to get started and create my own. Do you
require any coding knowledge to make your own blog?
Any help would be greatly appreciated!
Great post. I used to be checking continuously this blog and I
am inspired! Extremely helpful info specially the closing phase 🙂 I deal with such
info a lot. I was seeking this certain information for a very lengthy time.
Thanks and best of luck.
Wow that was unusual. I just wrote an incredibly long comment but after I
clicked submit my comment didn’t show up. Grrrr…
well I’m not writing all that over again. Anyway, just wanted to say
great blog!
I couldn’t refrain from commenting. Very well written!
This design is steller! You most certainly know how to keep a reader amused.
Between your wit and your videos, I was
almost moved to start my own blog (well, almost…HaHa!) Great job.
I really enjoyed what you had to say, and more than that, how you presented it.
Too cool!
Wonderful article! That is the type of info that are meant to
be shared around the net. Disgrace on the seek engines for now not positioning this publish upper!
Come on over and visit my website . Thank you =)
Hi there, always i used to check website posts here early in the break
of day, as i like to gain knowledge of more and more.
Hello! I just wanted to ask if you ever have
any problems with hackers? My last blog (wordpress) was hacked and I
ended up losing months of hard work due to no
back up. Do you have any solutions to protect against hackers?
I got this web page from my friend who told me about this website and at the moment this time I
am browsing this web site and reading very
informative articles or reviews at this place.
It’s very easy to find out any topic on web as compared to books, as I found this article
at this web page.
Hi there, all is going fine here and ofcourse
every one is sharing data, that’s in fact excellent,
keep up writing.
Hi, I think your site might be having browser compatibility issues.
When I look at your blog site in Chrome, it looks fine but when opening in Internet Explorer, it has some overlapping.
I just wanted to give you a quick heads up! Other then that, superb blog!
Hurrah! In the end I got a blog from where I be able
to truly take helpful facts regarding my study and knowledge.
This design is incredible! You certainly know how to keep a
reader amused. Between your wit and your videos, I was almost moved to start
my own blog (well, almost…HaHa!) Excellent job. I really enjoyed what you had to say,
and more than that, how you presented it. Too
cool!
What i do not realize is in fact how you’re now not really a lot more smartly-preferred than you may be now.
You’re very intelligent. You know thus considerably in terms of
this matter, produced me for my part believe it from a lot of varied angles.
Its like men and women aren’t interested except it’s one thing to do with
Girl gaga! Your personal stuffs great. At all
times deal with it up!
Wonderful website you have here but I was wondering
if you knew of any forums that cover the same topics discussed here?
I’d really love to be a part of community where I can get suggestions from other experienced
people that share the same interest. If you have any suggestions, please
let me know. Thank you!
This is very interesting, You are a very skilled blogger.
I have joined your rss feed and look forward
to seeking more of your fantastic post. Also, I have shared
your site in my social networks!
Your mode of explaining everything in this piece of writing is actually pleasant, all can simply know it, Thanks
a lot.
Remarkable issues here. I am very glad to look
your post. Thank you so much and I’m having a look ahead to contact you.
Will you please drop me a mail?
Hi there Dear, are you truly visiting this site on a regular basis,
if so then you will absolutely take fastidious knowledge.
I do not even know the way I finished up here, however
I believed this publish was great. I don’t recognize who you’re but definitely you are going to a
famous blogger in the event you aren’t already. Cheers!
I have read so many articles about the blogger lovers however this post is
genuinely a nice article, keep it up.
Pretty nice post. I simply stumbled upon your blog
and wished to mention that I’ve truly loved surfing around your blog posts.
In any case I will be subscribing for your feed and I’m hoping
you write again very soon!
Hello, I enjoy reading all of your article post. I like to write a
little comment to support you.
My programmer is trying to convince me to move to .net from PHP.
I have always disliked the idea because of the
expenses. But he’s tryiong none the less. I’ve been using
Movable-type on a number of websites for about
a year and am worried about switching to another platform.
I have heard very good things about blogengine.net. Is there a way I can import all
my wordpress posts into it? Any kind of help would be greatly appreciated!
Hello just wanted to give you a quick heads up. The text in your content seem to be running off the screen in Safari.
I’m not sure if this is a format issue or something to do with internet browser compatibility but
I thought I’d post to let you know. The style and design look great though!
Hope you get the issue fixed soon. Thanks
This site truly has all of the information and facts I needed concerning this subject
and didn’t know who to ask.