IBOV 172,236.05 ▲ 2.22% IPC MEX 71,866.30 ▲ 0.66% MERVAL 2,848,945 — — USD/BRL5.54▲ 0.51% USD/MXN18.51▼ 0.15% USD/CLP968.30▲ 0.11% USD/COP3,269▲ 4.77% USD/PEN3.41▲ 0.12% USD/ARS1,545▼ 0.02% USD/UYU40.45▲ 0.35% USD/PYG6,450▲ 1.45% USD/BOB11.74▼ 0.59% USD/DOP60.45▲ 2.39% USD/CRC446.56▼ 0.38% USD/GTQ7.64▼ 0.05% USD/HNL26.89▲ 0.02% USD/NIO36.62▲ 2.53% USD/VES897.02▲ 0.07% USD/PAB1.00— 0.00% USD/BZD2.00— 0.00% USD/JMD157.79▼ 0.02% USD/TTD6.72▼ 0.03% EUR/BRL6.20▲ 1.20% BRENT 90.67 ▼ 2.05% WTI 85.40 ▼ 1.67% IRON ORE 161.91 — — COPPER 6.30 ▼ 0.42% GOLD 4,081 ▼ 0.82% SILVER 52.33 ▼ 0.45% SOY 1,194 ▲ 0.95% CORN 441.75 ▲ 0.57% WHEAT 589.75 ▲ 0.30% COFFEE 268.60 ▼ 1.83% SUGAR 18.27 ▲ 0.33% ORANGE JUICE 143.50 ▲ 7.85% COTTON 82.47 ▲ 4.68% COCOA 4,942 ▼ 1.24% BEEF 216.33 ▲ 1.06% CATTLE 328.83 ▲ 2.02% LITHIUM 61.35 ▲ 0.72% PETR4 45.19 ▼ 0.24% VALE3 66.11 ▲ 3.23% ITUB4 41.72 ▲ 2.94% BBDC4 14.68 ▲ 3.38% ABEV3 15.61 ▲ 0.84% BBAS3 17.02 ▼ 0.64% B3SA3 14.85 ▲ 3.20% WEGE3 50.74 ▲ 5.29% PRIO3 59.39 ▼ 1.80% SUZB3 54.20 ▲ 1.50% RENT3 30.83 ▲ 1.78% AZZA3 15.12 ▲ 2.44% CSAN3 2.77 — 0.00% RAIZ4 24.40 ▼ 12.86% PCAR3 2.43 ▲ 1.25% GMAT3 3.83 ▲ 0.79% PSSA3 45.65 ▲ 2.93% CVCB3 0.87 ▲ 3.57% POSI3 3.03 ▼ 1.94% SLCE3 17.30 ▲ 4.15% NATU3 5.71 ▲ 10.44% BRKM5 3.02 ▼ 5.63% RANI3 8.76 ▲ 3.44% CSNA3 4.49 ▲ 1.81% IBOV 172,236.05 ▲ 2.22% IPC MEX 71,866.30 ▲ 0.66% MERVAL 2,848,945 — — USD/BRL 5.53 ▲ 0.39% USD/MXN 18.51 ▼ 0.15% USD/CLP 968.86 ▲ 0.17% USD/COP 3,269 ▲ 4.77% USD/PEN 3.41 ▼ 1.07% USD/ARS 1,545 ▼ 0.02% USD/UYU 40.45 ▲ 0.35% USD/PYG 6,450 ▲ 1.45% USD/BOB 11.74 ▼ 0.59% USD/DOP 60.46 ▲ 2.41% USD/CRC 446.56 ▼ 0.38% USD/GTQ 7.64 ▼ 0.05% USD/HNL 26.89 ▲ 0.02% USD/NIO 36.62 ▲ 2.53% USD/VES 897.02 ▲ 0.07% USD/PAB 1.00 — 0.00% USD/BZD 2.00 — 0.00% USD/JMD 157.79 ▲ 2.42% USD/TTD 6.72 ▲ 2.10% EUR/BRL 6.20 ▲ 1.19% BRENT 90.67 ▼ 2.05% WTI 85.40 ▼ 1.67% IRON ORE 161.91 — — COPPER 6.30 ▼ 0.42% GOLD 4,081 ▼ 0.82% SILVER 52.33 ▼ 0.45% SOY 1,194 ▲ 0.95% CORN 441.75 ▲ 0.57% WHEAT 589.75 ▲ 0.30% COFFEE 268.60 ▼ 1.83% SUGAR 18.27 ▲ 0.33% ORANGE JUICE 143.50 ▲ 7.85% COTTON 82.47 ▲ 4.68% COCOA 4,942 ▼ 1.24% BEEF 216.33 ▲ 1.06% CATTLE 328.83 ▲ 2.02% LITHIUM 61.35 ▲ 0.72% PETR4 45.19 ▼ 0.24% VALE3 66.11 ▲ 3.23% ITUB4 41.72 ▲ 2.94% BBDC4 14.68 ▲ 3.38% ABEV3 15.61 ▲ 0.84% BBAS3 17.02 ▼ 0.64% B3SA3 14.85 ▲ 3.20% WEGE3 50.74 ▲ 5.29% PRIO3 59.39 ▼ 1.80% SUZB3 54.20 ▲ 1.50% RENT3 30.83 ▲ 1.78% AZZA3 15.12 ▲ 2.44% CSAN3 2.77 — 0.00% RAIZ4 24.40 ▼ 12.86% PCAR3 2.43 ▲ 1.25% GMAT3 3.83 ▲ 0.79% PSSA3 45.65 ▲ 2.93% CVCB3 0.87 ▲ 3.57% POSI3 3.03 ▼ 1.94% SLCE3 17.30 ▲ 4.15% NATU3 5.71 ▲ 10.44% BRKM5 3.02 ▼ 5.63% RANI3 8.76 ▲ 3.44% CSNA3 4.49 ▲ 1.81%
since 2009
Tuesday, November 10, 2026

Harvard epidemiologist says new scientific findings make Covid vaccination passports both incorrect and discriminatory

By · · 2 min read
Harvard epidemiologist says new scientific findings make Covid vaccination passports both incorrect and discriminatory

RIO DE JANEIRO, BRAZIL – Harvard Medical School professor Martin Kulldorff said research showing that natural immunity offers exponentially more protection than vaccines means that vaccine passports are unscientific and discriminatory because they disproportionately affect working-class people.

“Previous Covid disease (lots of working-class) provides better immunity than vaccines (lots of professionals), so vaccine mandates are not only scientific nonsense, they are also discriminatory and unethical,” observed Kulldorff, a biostatistician, and epidemiologist, on Twitter.

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Different studies, including one from Israel, show that natural immunity – gained by having had Covid-19 – offers better protection against a recurrence than vaccines.

Moreover, CDC’s own research shows that vaccinated people still get infected with Covid-19 and carry viral loads like unvaccinated people. These vaccines are either Messenger RNA (mRNA) vaccines such as Pfizer-BioNTech and the Moderna COVID-19 vaccines or Vector vaccines such as Janssen/Johnson & Johnson and AstraZeneca vaccines.

“The high viral loads suggest an increased risk of transmission and raised concerns that, unlike other variants, vaccinated persons infected with Delta can transmit the virus,” said Rochelle Walensky, director of the CDC.

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These data suggest that vaccinated people still spread the virus in much the same way as unvaccinated people. So what is the point of using vaccine passports?

Vaccine passports are considered by some as immoral and a massive government overreach even in the absence of these findings. There is no historical parallel for governments to restrict the movements of healthy people for a respiratory virus in this way.

Moreover, the authorities’ justification for vaccine passports becomes scientifically incorrect in light of these new revelations.

This article was produced by The Rio Times’ automated AI newsroom. Editorial responsibility: Matthias Camenzind, Publisher and Editor-in-Chief. The Rio Times also runs Ask Rio Times, which answers from 100,000+ of our own articles, the daily Latin America Power Map, and prediction-market odds on elections and markets.. How we use AI · Report an error

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