Jun 15, 2026, 21:04

COVID-19 Vaccines and Heart Health

COVID-19 疫苗與心臟健康

Introduction

New reports show that COVID-19 vaccines help people. They stop very bad sickness and heart problems.

新報告顯示 COVID-19 疫苗對人們有幫助，能防止病情嚴重惡化及心臟問題。

Main Body

A big study in the USA looked at one million people. It found that vaccines protect the heart. Old people and sick people get the most help. These vaccines save many lives every year.

美國一項針對一百萬人的大型研究發現，疫苗可以保護心臟。年長者與病患獲益最多。這些疫苗每年拯救許多生命。

Doctors in the USA and Europe say the vaccines work well. They stop people from going to the hospital. However, not many people get the new vaccine. Some people do not trust the technology.

美國與歐洲的醫生表示疫苗效果良好，能防止患者住院。然而，並沒有很多人接種新疫苗，部分人並不信任這項技術。

In Hong Kong, the government tells people to get vaccines now. Two children got very sick because they had no vaccine. The clinics will close soon. New vaccines will arrive in late 2026.

在香港，政府呼籲民眾現在接種疫苗。兩名兒童因未接種疫苗而病情嚴重。診所將於近期關閉，新疫苗將於 2026 年底抵達。

Conclusion

Vaccines are good for the heart and health. But some people do not want them, and some places have no medicine.

疫苗對心臟與健康有益。但部分人不想接種，且部分地區缺乏藥品。

Vocabulary Learning

⚡ Quick Tip: Action Words (Verbs)

In this story, we see words that tell us what is happening. These are the 'engines' of the sentence.

The Pattern: Person/Thing $\rightarrow$ Action $\rightarrow$ Object

Vaccines $\rightarrow$ protect $\rightarrow$ the heart.
Doctors $\rightarrow$ say $\rightarrow$ the vaccines work.
Clinics $\rightarrow$ close $\rightarrow$ soon.

📦 Word Groups for A2

People & Places

Doctors
Government
Hospital
USA / Europe / Hong Kong

Health Words

Sickness (Feeling bad)
Protect (Keep safe)
Save (Stop from dying)

⚠️ The 'No' Word: However

When you want to change the direction of your story, use However. It is like a yellow traffic light. It means 'But'.

Example: Vaccines work well. $\rightarrow$ However, some people do not trust them.

Vocabulary Learning

reports (n.)

Documents or news stories that give information about something.

Example:I read the news reports about the weather.

vaccines (n.)

Medicine that helps your body fight a specific sickness.

Example:The doctor gave the baby vaccines to keep him healthy.

protect (v.)

To keep someone or something safe from danger or harm.

Example:A helmet will protect your head when you ride a bike.

trust (v.)

To believe that someone or something is good, honest, or safe.

Example:I trust my best friend with my secrets.

technology (n.)

New machines or ways of doing things using science.

Example:Modern technology makes it easy to talk to people far away.

clinics (n.)

Small hospitals or places where people go for medical help.

Example:There are many health clinics in the city.

Analysis of COVID-19 Vaccine Effectiveness and Public Health Measures

COVID-19 疫苗效能與公共衛生措施分析

Introduction

Recent medical data and health guidelines show that updated COVID-19 vaccines continue to reduce the risk of severe heart problems and critical illness across different groups of people.

最近的醫療數據與健康指南顯示，更新版的 COVID-19 疫苗能持續降低不同人群患嚴重心臟問題與危重病的風險。

Main Body

A large study published in JAMA Internal Medicine, using data from over one million U.S. veterans, shows that COVID-19 vaccination significantly protects the heart. The research indicates a 38% reduction in major heart-related events specifically caused by COVID-19. Furthermore, there was a 24% decrease in all types of cardiac events, suggesting that vaccines may prevent about 3,500 heart problems and 2,400 deaths per million people every year. These benefits were strongest in people aged 75 and older and those with chronic lung or kidney diseases. Dr. Ziyad Al-Aly emphasized that this reduction likely happens because vaccines prevent unnoticed infections that would otherwise lead to heart complications.

發表在《美國內科醫學雜誌》(JAMA Internal Medicine) 的一項大型研究，利用超過一百萬名美國退伍軍人的數據，顯示 COVID-19 疫苗能顯著保護心臟。研究指出，由 COVID-19 直接引起的重大心臟事件減少了 38%。此外，所有類型的心臟事件減少了 24%，表明疫苗每年每百萬人大約可防止 3,500 例心臟問題與 2,400 例死亡。這些益處在 75 歲或以上長者，以及患有慢性肺病或腎臟病的人士身上最為顯著。Ziyad Al-Aly 醫生強調，這種減少很可能是因為疫苗防止了未被察覺的感染，否則這些感染將導致心臟併發症。

Additional data from the CDC and European health authorities support these results. In the U.S., vaccines are 41% effective against critical illness for adults, while European studies show a 55% effectiveness in preventing symptoms among adults over 60. However, vaccination rates remain low; in the U.S., only 17.5% of adults and 22.6% of seniors received the 2025-2026 dose. Dr. Robert Califf asserted that this trend is due to political arguments surrounding mRNA technology, although he maintained that the clinical benefits are still much greater than the risks.

來自美國疾病控制與預防中心 (CDC) 與歐洲衛生部門的額外數據亦支持這些結果。在美國，疫苗對成人預防危重病的效能為 41%；而歐洲的研究顯示，疫苗預防 60 歲以上成人出現症狀的效能為 55%。然而，接種率依然低迷；在美國，僅有 17.5% 的成年人與 22.6% 的長者接種了 2025-2026 年的劑量。Robert Califf 醫生斷言，此趨勢是由於圍繞 mRNA 技術的政治爭論造成，儘管他堅持臨床益處仍遠大於風險。

At the same time, the Hong Kong Centre for Health Protection (CHP) has urged high-risk groups to get vaccinated before current stocks expire. This decision follows two serious cases involving unvaccinated children. The CHP has set deadlines for vaccination services, with pediatric services ending on July 10 and general services ending on September 5. These dates are set while the city waits for the new LP.8.1 mRNA strain to arrive in late 2026. Dr. Mike Kwan emphasized that people should get vaccinated immediately to ensure their immune systems have enough time to develop before the supply gap.

與此同時，香港衛生防護中心 (CHP) 呼籲高風險人士在現有庫存過期前盡快接種疫苗。此決定是基於兩宗涉及未接種疫苗兒童的嚴重個案。衛生防護中心已訂定接種服務的期限，兒童服務將於 7 月 10 日結束，一般服務則於 9 月 5 日結束。在全市等待 2026 年底新 LP.8.1 mRNA 菌株到貨之際，設定了這些日期。關事龍醫生 (Dr. Mike Kwan) 強調，市民應立即接種疫苗，以確保免疫系統在供應缺口前有足夠時間建立。

Conclusion

Current evidence confirms that COVID-19 vaccines are still useful for reducing heart disease and critical illness, even though political factors and supply changes have slowed down vaccination rates.

目前證據證實，儘管政治因素與供應變化導致接種率下降，但 COVID-19 疫苗在減少心臟病與危重病方面依然有效。

Vocabulary Learning

🚀 The 'Precision' Leap: Moving from Simple to Specific

At the A2 level, you describe things as 'good' or 'bad'. To reach B2, you must use precise verbs that tell the reader exactly how someone is speaking or how a result is happening.

🔍 The 'Reporting Verb' Upgrade

Look at these three different ways the experts in the text shared their ideas. They don't just say "said"; they use verbs that show their intent:

Emphasized $\rightarrow$ $\to$ Used when someone wants to make a point very clear and strong.
- Example: "Dr. Al-Aly emphasized that this reduction likely happens..."
Asserted $\rightarrow$ $\to$ Used when someone states a fact confidently, even if others disagree.
- Example: "Dr. Robert Califf asserted that this trend is due to political arguments..."
Urged $\rightarrow$ $\to$ Used when someone strongly suggests a necessary action to avoid danger.
- Example: "The CHP has urged high-risk groups to get vaccinated..."

📈 The Logic of 'Reduction' vs. 'Decrease'

B2 students distinguish between the process and the result.

A2 Word	B2 Upgrade	Context from Text
Less	Reduction	"A 38% reduction in major heart-related events"
Go down	Decrease	"There was a 24% decrease in all types of cardiac events"

Coach's Tip: Use reduction when talking about a targeted effort to make something smaller (like a risk) and decrease when describing a general downward trend in numbers.

🛠️ Sentence Architecture: The 'Although' Pivot

Stop using "But" at the start of every sentence. B2 speakers use concessive clauses to show complex thinking.

"...although he maintained that the clinical benefits are still much greater than the risks."

The Formula: [Fact A] + although + [Opposing Fact B] This allows you to acknowledge two different sides of an argument in one single, fluid sentence. This is the hallmark of a B2 learner.

Vocabulary Learning

significantly (adv.)

In a sufficiently great or important way as to be worthy of attention.

Example:The new medical treatment significantly reduced the recovery time for the patients.

chronic (adj.)

Persisting for a long time or constantly recurring.

Example:Chronic diseases, such as diabetes, require long-term management and care.

emphasized (v.)

Give special importance or prominence to something in speaking or writing.

Example:The professor emphasized the importance of citing sources in the final essay.

asserted (v.)

State a fact or belief confidently and forcefully.

Example:The lawyer asserted that her client was innocent based on the available evidence.

maintained (v.)

Continue to assert a position or state of affairs despite opposition.

Example:Despite the criticism, the scientist maintained that her hypothesis was correct.

urged (v.)

Try earnestly to persuade someone to do something.

Example:The government urged citizens to evacuate the area before the storm hit.

expire (v.)

To come to an end or become invalid after a specific date.

Example:Please check the date on the milk carton to ensure it doesn't expire tomorrow.

Analysis of Global COVID-19 Vaccination Efficacy and Public Health Implementation

全球 COVID-19 疫苗功效與公共衛生實施分析

Introduction

Recent clinical data and public health directives indicate that updated COVID-19 vaccinations continue to mitigate severe cardiovascular events and critical illness across diverse populations.

近期臨床數據與公共衛生指令顯示，更新後的 COVID-19 疫苗持續能降低不同人群中嚴重心血管事件與危重病情的發生率。

Main Body

A longitudinal study published in JAMA Internal Medicine, utilizing data from over one million U.S. Department of Veterans Affairs patients, demonstrates a significant cardioprotective effect associated with COVID-19 vaccination. The research indicates a 38% reduction in major adverse cardiovascular events (MACE) specifically linked to COVID-19. Furthermore, a 24% decrease in all-cause cardiac events was observed, suggesting that vaccination may prevent approximately 3,500 MACE and 2,400 deaths per million individuals annually. These benefits were most pronounced in cohorts aged 75 and older and those with chronic pulmonary or renal pathologies. Dr. Ziyad Al-Aly posits that the reduction in all-cause events likely reflects the prevention of unrecognized SARS-CoV-2 infections that would otherwise manifest as cardiovascular complications.

發表在《JAMA Internal Medicine》的一項縱向研究，利用超過一百萬名美國退伍軍人事務部患者的數據，證明了 COVID-19 疫苗具有顯著的心臟保護作用。研究顯示，與 COVID-19 直接相關的主要不良心血管事件 (MACE) 減少了 38%。此外，所有原因引起的心臟事件減少了 24%，這表明接種疫苗每年每百萬人可預防約 3,500 宗 MACE 與 2,400 宗死亡。這些益處在 75 歲及以上以及患有慢性肺病或腎臟病的族群中最為顯著。Ziyad Al-Aly 醫師認為，所有原因事件的減少，可能反映了疫苗預防了部分未被發現的 SARS-CoV-2 感染，否則這些感染將演變為心血管併發症。

Complementary data from the CDC and European health authorities corroborate these findings. U.S. data indicates a 41% effectiveness rate against critical illness for adults, while European studies report a 55% effectiveness in preventing symptomatic disease among adults aged 60 and above. Despite these metrics, vaccine uptake remains suboptimal; in the U.S., only 17.5% of adults and 22.6% of those over 65 received the 2025-2026 formulation. Dr. Robert Califf attributes this trend to the politicization of mRNA technology and official rhetoric from the Department of Health and Human Services, asserting that the clinical benefits continue to outweigh the risks.

來自 CDC 與歐洲衛生部門的補充數據也證實了這些發現。美國數據顯示，疫苗對成人危重病情的有效率為 41%，而歐洲研究報告指出，對 60 歲及以上成人預防有症狀疾病的有效率為 55%。儘管有這些指標，疫苗接種率仍不理想；在美國，僅有 17.5% 的成人與 22.6% 的 65 歲以上人士接種了 2025-2026 年的配方。Robert Califf 醫師將此趨勢歸因於 mRNA 技術的政治化以及衛生及公共服務部的官方言論，並主張臨床益處依然高於風險。

Parallel to these clinical findings, the Hong Kong Centre for Health Protection (CHP) has issued urgent directives for high-risk populations to utilize existing vaccine stocks before expiration. This measure follows the identification of two critical pediatric cases involving unvaccinated children. The CHP has established a tiered deadline for vaccination services, with pediatric services concluding on July 10 and general services ending September 5, pending the arrival of the LP.8.1 mRNA strain in the final quarter of 2026. Dr. Mike Kwan emphasizes the necessity of immediate administration to ensure the requisite fourteen-day window for immune development prior to the anticipated supply gap.

與這些臨床發現平行，香港衛生防護中心 (CHP) 已向高風險族群發出緊急指令，要求在疫苗過期前使用現有庫存。此舉係在發現兩宗涉及未接種疫苗兒童的危重病例後採取的。衛生防護中心為疫苗接種服務設定了分階段截止日期，兒童服務將於 7 月 10 日結束，一般服務於 9 月 5 日結束，以待 2026 年第四季 LP.8.1 mRNA 菌株到貨。關茂才醫師強調，必須立即接種，以確保在預期供應缺口前有足夠的 14 天免疫發展期。

Conclusion

Current evidence supports the continued utility of COVID-19 vaccines in reducing cardiovascular morbidity and critical illness, although uptake is hindered by socio-political factors and supply transitions.

目前證據支持持續使用 COVID-19 疫苗以降低心血管發病率與危重病情，儘管接種率受到社會政治因素與供應過渡期的阻礙。

Vocabulary Learning

The Architecture of Academic Hedging & Precision

To move from B2 to C2, a student must transition from stating facts to positioning claims. The provided text is a masterclass in Epistemic Modality—the linguistic means by which a writer expresses the degree of certainty regarding a proposition.

1. The "Nuance Layer": Verbs of Attribution

Notice the strategic selection of verbs used to introduce theories. The author does not use "says" or "believes," which are too pedestrian for C2 discourse. Instead, we see:

Posits: Used when Dr. Al-Aly suggests a theoretical explanation for a data trend. It implies a formal proposition that serves as a basis for further argument.
Attributes: Used by Dr. Califf to establish a causal link between a sociological trend (politicization) and a numerical outcome (suboptimal uptake).
Corroborate: Used to link disparate datasets (CDC and European authorities), transforming individual findings into a consolidated scientific consensus.

2. Quantifying the Qualitative

C2 mastery requires the ability to integrate precise metrics with high-level abstract descriptors. Observe the phrase:

"...vaccine uptake remains suboptimal"

While a B2 student might say "not enough people got the vaccine," the C2 writer uses suboptimal. This is not merely a "fancy word"; it is a technical term implying a gap between the actual result and the ideal requirement for herd immunity.

3. Syntactic Density: The Nominalization Engine

High-level academic English relies on Nominalization—turning verbs/adjectives into nouns to increase information density.

B2 Approach: People are politicizing mRNA technology, and this makes fewer people take the vaccine.
C2 Approach (from text): "...the politicization of mRNA technology... [leads to] vaccine uptake [remaining] suboptimal."

By transforming the action (politicizing) into a concept (politicization), the author can treat a complex social phenomenon as a single noun, allowing it to function as the subject of a sophisticated clinical analysis.

4. Lexical Precision in Medical Contexts

Distinguish between Morbidity (the state of being diseased) and Mortality (death). The conclusion mentions "cardiovascular morbidity," which encompasses everything from chronic heart failure to acute events, whereas "deaths per million" refers to mortality. C2 fluency is defined by this refusal to use generic terms like "health problems" when a precise clinical term exists.

Vocabulary Learning

mitigate (v.)

To make something less severe, serious, or painful.

Example:The new government policy is designed to mitigate the effects of inflation on low-income families.

longitudinal (adj.)

Relating to a research design that involves repeated observations of the same variables over short or long periods of time.

Example:The longitudinal study tracked the cognitive development of children from age five to eighteen.

cardioprotective (adj.)

Having a protective effect on the heart or cardiovascular system.

Example:Certain omega-3 fatty acids are believed to have cardioprotective properties that reduce the risk of heart attack.

cohorts (n.)

Groups of people who share a common characteristic or experience within a defined period.

Example:The researchers compared health outcomes between different age cohorts to determine the vaccine's efficacy.

pathologies (n.)

The science of the causes and effects of diseases, or the specific diseased states of an organ or tissue.

Example:The patient presented with several complex renal pathologies that complicated the treatment process.

posits (v.)

To put forward as a basis of argument; to suggest or assume the existence, fact, or truth of something as a basis for reasoning.

Example:The physicist posits that the universe is expanding at an accelerating rate.

corroborate (v.)

To confirm or give support to a statement, theory, or finding.

Example:The witness's testimony served to corroborate the evidence found at the crime scene.

suboptimal (adj.)

Below the highest level or standard; less than ideal.

Example:The project failed because the team operated under suboptimal conditions with insufficient funding.

rhetoric (n.)

The art of effective or persuasive speaking or writing, often used to describe language that is intended to influence but may lack sincerity.

Example:The politician's soaring rhetoric failed to provide concrete solutions to the economic crisis.

morbidity (n.)

The condition of being diseased; the rate of disease in a population.

Example:The study focused on reducing the morbidity associated with long-term diabetes.

Practice All words in a crossword→