{"id":83509,"date":"2023-01-23T03:45:15","date_gmt":"2023-01-23T08:45:15","guid":{"rendered":"https:\/\/blog.sitata.com\/?p=83509"},"modified":"2023-02-03T11:55:02","modified_gmt":"2023-02-03T16:55:02","slug":"zero-covid-strategy-was-it-worth-it","status":"publish","type":"post","link":"https:\/\/www.sitata.com\/it\/strategia-zero-covid-ne-e-valsa-la-pena\/","title":{"rendered":"Strategia Zero COVID: ne \u00e8 valsa la pena?"},"content":{"rendered":"

Durante la pandemia di COVID-19, la Cina ha condotto un massiccio esperimento per verificare se fosse possibile contenere la trasmissione di questo virus all'interno del Paese e impedire che venisse introdotto nel Paese dai viaggiatori provenienti dall'estero. Con l'evolversi degli eventi, l'approccio \u00e8 diventato noto come \"strategia zero COVID\". Ha funzionato? La risposta \u00e8: in un certo senso, ma ha dovuto essere abbandonata a causa di conseguenze che non potevano essere previste al momento dell'avvio della strategia.<\/p>\n

Ma prima di tutto, analizziamo le misure specifiche che compongono la \"strategia zero COVID\". Per farlo, dobbiamo tornare indietro al gennaio 2020, quando la Cina si rese conto di dover segnalare il verificarsi di 40 casi insoliti di polmonite grave nella citt\u00e0 di Wuhan. Si trattava dei primi casi ufficialmente segnalati di pandemia COVID-19 e, in breve tempo, la malattia \u00e8 stata portata dai viaggiatori in altri Paesi. La causa \u00e8 stata identificata piuttosto rapidamente in un nuovo coronavirus, ma si sapeva poco di come questo virus avrebbe colpito la popolazione. \u00c8 chiaro che si trasmetteva da persona a persona, ma quali misure si potevano adottare per impedirne la diffusione?<\/p>\n

Rendendosi conto che i viaggiatori internazionali stavano diffondendo la malattia da un paese all'altro, i singoli paesi hanno istituito misure per bloccare o limitare l'ingresso di persone nei loro paesi. In quasi tutti i Paesi sono state adottate misure come il divieto di ingresso, l'obbligo di effettuare il test COVID prima di salire sugli aerei o la quarantena obbligatoria per i viaggiatori in entrata.<\/p>\n

Nel frattempo, una volta disponibile il test per il virus, i Paesi hanno avviato misure per fermare la trasmissione interna, ad esempio imponendo l'allontanamento sociale, la chiusura di locali pubblici, l'obbligo di indossare maschere, l'autoisolamento in caso di malattia e l'invito a sottoporsi al test.<\/p>\n

L'introduzione di vaccini efficaci e di nuovi trattamenti che hanno ridotto drasticamente le complicazioni, come l'ospedalizzazione, la terapia intensiva e la morte, ha cambiato le cose. La pandemia divenne pi\u00f9 gestibile e si ridusse la necessit\u00e0 di misure drastiche per limitare l'ingresso dei viaggiatori e per fermare la trasmissione locale.<\/p>\n

A met\u00e0 del 2022, con ampi segmenti di popolazione immunizzati attraverso la vaccinazione, un certo livello di tolleranza per i bassi livelli di trasmissione del virus, di ospedalizzazione e di morte ha permesso di interrompere quasi tutte le misure di controllo precoci.<\/p>\n

Come si \u00e8 comportata la Cina in tutto questo?<\/p>\n

All'inizio sono state adottate misure per eliminare quasi del tutto i viaggi aerei internazionali e i viaggi interni con qualsiasi mezzo di trasporto. Le misure di salute pubblica, come l'allontanamento sociale, le limitazioni agli spostamenti della popolazione, la quarantena e i test COVID approfonditi, sono state attuate con un'intensit\u00e0 mai vista in altri Paesi. L'obiettivo dichiarato era quello di bloccare la trasmissione del virus ovunque. Il concetto di \"isolamento\" \u00e8 stato spesso applicato a intere comunit\u00e0 o addirittura citt\u00e0, in modo da bloccare tutti i movimenti e le interazioni. Quando i test sono diventati disponibili, intere citt\u00e0 sono state sottoposte al test COVID e alla successiva quarantena.<\/p>\n

Se le persone risultavano positive al test, c'era il rischio che venissero messe in quarantena per settimane in una stanza d'ospedale. Se ci si recava in un negozio o in un ristorante visitato da una persona positiva alla COVID, si poteva essere costretti a rimanere a lungo in un centro di quarantena con alloggi scarsi. Oppure potreste essere rinchiusi in casa vostra senza il permesso di uscire, nemmeno per procurarvi del cibo. Lo stesso potrebbe accadere se si incrocia una persona infetta per strada.<\/p>\n

Chi era stato rinchiuso in quarantena era spesso soggetto a discriminazioni dopo il suo rilascio.<\/p>\n

I test sono diventati onnipresenti. In grandi citt\u00e0 come Pechino, Shanghai o Shenzhen, con popolazioni di decine di milioni di persone, si richiedeva di sottoporsi ai test ogni due o tre giorni presso le cabine sul marciapiede. La conformit\u00e0 veniva monitorata attraverso i codici sanitari sul cellulare.<\/p>\n

Sono stati introdotti i vaccini COVID di produzione cinese e sono state somministrate pi\u00f9 di 3 miliardi di dosi. Tuttavia, gli studi hanno dimostrato che i vaccini pi\u00f9 comunemente utilizzati avevano un'efficacia di 51% (CoronaVac) e 79% (Sinopharm), notevolmente inferiore a quella dei vaccini Moderna e Pfizer comunemente utilizzati in molti altri Paesi.<\/p>\n

Torniamo alla domanda iniziale: tutte queste misure severe hanno funzionato?<\/p>\n

La risposta \u00e8 che non ci sono stati focolai o \"ondate\" significative di infezione nel 2020 e nel 2021. Guardate questa tabella:<\/p>\n

\n\n\n\n\n\n
Paese<\/td>\nNumero di casi per 100.000 persone<\/td>\nNumero di decessi per 100.000 persone<\/td>\n<\/tr>\n
Cina<\/td>\n75<\/td>\n2<\/td>\n<\/tr>\n
STATI UNITI D'AMERICA<\/td>\n30,400<\/td>\n331<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<\/p>\n

Complessivamente, la Cina ha registrato circa 10,5 milioni di casi e 32.700 decessi fino al 5 gennaio 2023. Nello stesso periodo, gli Stati Uniti hanno registrato 101 milioni di casi e 1,1 milioni di decessi.<\/p>\n

Sebbene l'affidabilit\u00e0 e l'accuratezza dei dati cinesi siano spesso messe in discussione, le differenze tra i due Paesi e i risultati delle loro diverse strategie sono notevolmente diversi.<\/p>\n

Ma la strategia zero della Cina \u00e8 sostenibile? Si \u00e8 appena rotto. Alcune settimane fa, nella citt\u00e0 di Xinjiang, un incendio in un condominio chiuso in quarantena ha ucciso 10 persone. La frustrazione accumulata dalla popolazione per le misure di controllo restrittive \u00e8 esplosa. In molte citt\u00e0 ci sono state manifestazioni pubbliche che hanno messo in discussione la necessit\u00e0 di continui blocchi e di test e quarantene approfonditi. La popolazione ha chiesto la fine della strategia zero COVID del governo. Anche i costi economici delle severe restrizioni (ad esempio, chiusura di aziende, disoccupazione, ecc.) sono diventati insopportabili.<\/p>\n

All'inizio di dicembre 2021, la Cina ha invertito la sua strategia zero COVID con ripercussioni drammatiche. Quasi tutte le misure previste dalla strategia zero sono state sospese quasi da un giorno all'altro. Di conseguenza, la Cina sta vivendo un'impennata di casi senza precedenti. Sebbene i dati siano discutibili, si parla di un aumento di quasi 50%, da 15.161 nuovi ricoveri in Cina continentale nella settimana conclusasi il 25 dicembre a 22.416 nella settimana conclusasi il 1\u00b0 gennaio. Il conteggio ufficiale dei decessi \u00e8 sottostimato, ma i crematori riferiscono di essere inondati di corpi.<\/p>\n

Perch\u00e9 \u00e8 successo? Possiamo ipotizzare che una combinazione di fattori abbia contribuito a questa esplosione della COVID. Da un lato, l'improvvisa abolizione di misure molto restrittive ha portato a un'immediata mescolanza di persone infette e non infette, ad esempio il ricongiungimento familiare, i viaggi in altre citt\u00e0, gli incontri pubblici, ecc. - tutti elementi che hanno aumentato il rischio di trasmissione del virus. Inoltre, gran parte della popolazione non era protetta a causa di vaccini con bassi livelli di efficacia.<\/p>\n

Infine, cosa significa l'attuale situazione della Cina per tutti gli altri Paesi? Da un lato, un'enorme ondata di nuovi casi di COVID-19 diffonder\u00e0 qualsiasi nuova variante del virus quando la popolazione cinese si sposter\u00e0 a livello internazionale. Inoltre, l'elevato numero di trasmissioni del virus offre al virus stesso l'opportunit\u00e0 di sviluppare nuove varianti. Ma in questo momento l'Organizzazione Mondiale della Sanit\u00e0 e i funzionari sanitari e governativi di tutto il mondo stanno cercando di valutare i rischi creati dal problema COVID-19 in Cina.<\/p>\n

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Durante la pandemia di COVID-19, la Cina ha condotto un massiccio esperimento per verificare se fosse possibile contenere la trasmissione di questo virus all'interno del Paese e impedire che venisse introdotto nel Paese dai viaggiatori provenienti dall'estero. Con l'evolversi degli eventi, l'approccio \u00e8 diventato noto come \"strategia zero COVID\". Ha funzionato? La risposta \u00e8 [...]<\/p>","protected":false},"author":2,"featured_media":83478,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"\n

During the COVID-19 pandemic, China conducted a massive experiment to see if it were possible to contain transmission of this virus within the country and keep it from getting into the country by travellers from abroad. As events unfolded, the approach became known as the \u201czero COVID strategy\u201d. Did it work? The answer is sort of but it had to be abandoned due to consequences that could not be predicted when the strategy was started.<\/p>\n\n\n\n

But first, let\u2019s look at the specific measures that made up the \u201czero COVID strategy\u201d. For that, we have to go way back to January 2020 when China realized that they had to report the occurrence of 40 unusual cases of severe pneumonia in the city of Wuhan. They were the first officially reported cases of the COVID-19 pandemic, and very shortly, the disease was carried by travellers to other countries. A new and novel coronavirus was identified rather rapidly as the cause, but little was known about how this virus would affect the population. Clearly, it was transmitted from person-to-person, but what measures could be taken to stop it from spreading?<\/p>\n\n\n\n

Realizing that international travellers were spreading the disease from county to country, individual countries instituted measures to stop or limit people from entering their countries. Measures such as banning entry, or requiring COVID testing before boarding aeroplanes, or establishing mandatory quarantine for entering travellers were established in nearly all countries.<\/p>\n\n\n\n

Meanwhile, once a test for the virus was available, countries initiated measures to stop internal transmission, e.g., mandating social distancing, closing public establishments, mandating mask-wearing, self-isolation if ill, and urging people to get tested.<\/p>\n\n\n\n

The introduction of effective vaccines and new treatments that dramatically reduced complications such as hospitalization, intensive care and death changed things. The pandemic became more manageable and the need for dramatic measures to restrict travellers from entering and for stopping local transmission was reduced.<\/p>\n\n\n\n

By mid-2022, with large segments of the population immunized through vaccination, a certain level of tolerance for low levels of transmission of the virus, hospitalization and death allowed for the discontinuance of almost all the early control measures.<\/p>\n\n\n\n

So how did China fare in all of this?<\/p>\n\n\n\n

Early on, steps were taken to nearly eliminate international air travel as well as domestic travel by any means of transportation. The public health measures such as social distancing, limitations on population movement, quarantine and extensive COVID testing were implemented with an intensity not seen in other countries. The stated goal was to stop all transmission of the virus everywhere. A \u201clockdown\u201d concept was often applied to entire communities or even cities, such that all movement and interactions were stopped. When testing became available, entire cities were submitted to COVID testing and subsequent quarantine.<\/p>\n\n\n\n

If people tested positive, there was a risk that they would be quarantined for weeks in a hospital room. If you went to a store or restaurant that had been visited by a COVID-positive person, you could be required to stay at a quarantine centre with sparse accommodations for a long time. Or you might be locked up in your own home without permission to leave, even to secure food. The same result could happen if you just passed an infected person on the street.<\/p>\n\n\n\n

If you had been locked up in quarantine, you were often subjected to discrimination after your release.<\/p>\n\n\n\n

Testing became ubiquitous. In large cities such as Beijing, Shanghai or Shenzhen with populations of tens of millions of people, people were required to be tested every two or three days at sidewalk booths. Compliance was tracked through health codes on your cell phone.<\/p>\n\n\n\n

Chinese-produced COVID vaccines were introduced and more than 3 billion doses were administered. However, studies showed that the most commonly used vaccines were 51% effective (CoronaVac) and 79% effective (Sinopharm) which is considerably lower than the commonly used Moderna and Pfizer vaccines in many other countries.<\/p>\n\n\n\n

Back to the original question: did all these harsh measures work?<\/p>\n\n\n\n

The answer is that there were no significant outbreaks or \u201cwaves\u201d of infection throughout 2020 and 2021. Check out this table:<\/p>\n\n\n\n

Country<\/td>Number of Cases per100,000 People<\/td>Number of Deaths peer100,000 people<\/td><\/tr>
China<\/td>75<\/td>2<\/td><\/tr>
USA<\/td>30,400<\/td>331<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Overall, China reported approximately 10.5 million cases and 32,700 deaths through 5 January 2023.  In the same time period, the USA recorded 101 million cases and 1.1 million deaths.<\/p>\n\n\n\n

Although the reliability and accuracy of Chinese data are often questioned, differences between the two countries and the results of their different strategies are considerably different.<\/p>\n\n\n\n

But is China\u2019s zero strategy sustainable? It just broke. Several weeks ago, in the city of Xinjiang, a fire in a locked quarantined apartment building killed 10 people. Accumulated frustration in the population with the restrictive control measures boiled over. There were public demonstrations in many cities questioning the need for ongoing lockdowns and extensive testing and quarantine. The population demanded the end to the government\u2019s zero COVID strategy. The economic costs of severe restrictions (e.g., closed businesses, unemployment, etc.) also have become unbearable.<\/p>\n\n\n\n

In early December 2021, China reversed its zero COVID strategy with dramatic repercussions. Nearly all of the measures in the zero strategy were suspended almost overnight. As a result, China is experiencing an unprecedented surge in cases. Although the data are questionable, there are reports of almost a 50% increase, from 15,161 new hospitalizations for mainland China during the week ending December 25 to 22,416 for the week ending January 1. The official death count is underreported but crematoria report that they are inundated with bodies.<\/p>\n\n\n\n

Why did this happen? We can speculate that a combination of factors contributed to this explosion of COVID. On one hand, the sudden lifting of very restrictive measures led to an immediate mixing of infected and uninfected people, e.g., the reunification of families, travel to other cities, public gatherings, etc. \u2013 all of which increased the risk of transmission of the virus. In addition, large portions of the population were not protected due to vaccines with low levels of effectiveness.<\/p>\n\n\n\n

Finally, what does the current China situation mean for all the other countries? On one hand, a huge wave of new COVID-19 cases will spread any new virus variants as the Chinese population travels internationally. In addition, large numbers of virus transmission provide the virus with opportunities to develop new variants. But right now, the World Health Organization and health and government officials worldwide are trying to assess the risk(s) created by China\u2019s COVID-19 problem.<\/p>\n","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"categories":[155,156,20],"tags":[108,109,145,112,113,22,229],"yoast_head":"\nZero COVID Strategy- Was it Worth it?<\/title>\n<meta name=\"description\" content=\"let\u2019s look at the specific measures that made up the \u201czero COVID strategy\u201d. 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