Introduction

Disease outbreaks pose major challenges to the affected populations. Thinking back to COVID-19 and the damage it has caused helps us to understand why disease outbreaks are studied to a great extent. Health complications are the main concerns in any disease outbreak, but the social and economic burdens must also be considered. In this article, we will explore the socioeconomic impacts of disease outbreaks, with a particular focus on the parainfluenza virus.

What is the parainfluenza virus?

Also known as the Human Parainfluenza Viruses (HPIVs), this group of viruses belongs to the Paramyxoviridae family.¹ HPIVs are commonly seen in infants, young children, and people who are immunocompromised, so it is less likely to come across this in otherwise healthy adults.

Despite the similar names, parainfluenza and influenza (‘flu’) are in fact different viruses and not related.² Therefore, while people may be advised to get an annual flu vaccine, this does not provide immunity against parainfluenza infection. However, both viral infections are associated with respiratory illness and present with typical ‘flu-like’ symptoms, like fever, cough, and sore throat. 

Most cases of parainfluenza are documented in children, although it can affect individuals of any age.³ There are four types of HPIV, and depending on the type, affected individuals are likely to have certain associated conditions:

1. HPIV-1 and HPIV-2: commonly associated with croup in children (HPIV-1 is the most common cause)
2. HPIV-3: associated with bronchiolitis and pneumonia
3. HPIV-4: least common but may cause respiratory tract illness

Each case can vary in severity, and thus the management will also depend on the presentation. In most cases, patients can treat their illnesses as they would for a common cold. Supportive management, like rest and hydration, are important, but if symptoms persist or any signs of severe illness arise (e.g., hoarse voice, stridor, difficulty breathing, or confusion), then medical attention must be sought. 

Transmission

HPIV is contagious, so it can be spread from person to person. This is due to airborne spread or coming into contact with infectious droplets. For example, if a child with HPIV sneezes or coughs near an unaffected child, they could pick up the infection.

HPIV is considered robust in the sense that it remains infectious in droplets and on surfaces for at least one hour (and longer depending on the environment).⁴ This can make it quite difficult to avoid. It explains why children can pass on the infection easily in environments such as nurseries and daycares. Unlike influenza viruses, HPIV is commonly seen in spring, summer, and fall. 

How can disease outbreaks affect our communities and the economy?

Before delving into the involvement of socioeconomics with infectious diseases, it is important to define what we mean by ‘outbreaks’. An outbreak describes a sudden or rapid incidence of a disease, which is not usual for a population.⁵ You may come across other terms such as pandemic and epidemic. Both terms relate to a sudden increase in disease prevalence, but the extent of the spread is different.

According to the World Health Organisation (WHO), epidemics would describe outbreaks in a single large population region, whereas pandemics would involve several countries and continents. From these descriptions, we can understand that ‘outbreak’ is a generic term, and it does not indicate severity, extent of spread, or mode of transmission. 

There are numerous examples of disease outbreaks that have left a significant mark on medical practice, general public perceptions, and the state of industries and economies. The most recent major example is COVID-19. The use of facemasks has become more common (although in some populations, this was already common practice e.g., Japan).

Schools and educational institutions offer online teaching, as this has facilitated more flexible and convenient options for education. In addition, much research is now being conducted to explore the impact of prolonged periods of quarantine on the social development of young children and the use of social media.⁶ From these few points alone, we can appreciate that the impacts of this pandemic, on a population level, are complex and varied. 

Economic impacts

What defines economic implications?

Financial repercussions of disease outbreaks on individuals, businesses, industries, and economies. It may be helpful to think about the effects of a disease outbreak by examples and to divide them based on the economic sectors: 

1. Primary extraction or working with natural resources, e.g., agriculture/farming:

The outbreak of Severe Acute Respiratory Syndrome (SARS) in 2003 had a significant impact on the tourism industry in affected regions such as Hong Kong and Singapore.⁷ Travel advisories and fear of contagion led to a sharp decline in tourist arrivals, resulting in hotel closures, layoffs, and revenue losses.

2. Secondary - manufacturing or construction (uses resources from the primary sector):

The COVID-19 pandemic caused widespread disruptions in global supply chains, impacting industries beyond healthcare and tourism.⁸ Manufacturing sectors faced shortages of raw materials and components, leading to production delays, inventory shortages, and revenue losses across various sectors.

3. Tertiary - industries providing services, e.g., healthcare, entertainment, retail:

The economic fallout from the Ebola outbreak in West Africa extended beyond the healthcare sector, affecting consumer confidence, investment decisions, and economic growth in the region.⁹ Reduced trade, business closures, and job losses exacerbated poverty and food insecurity, contributing to long-term economic challenges.

4. Quaternary - education, research, and long-term changes with an aim for development:

The global response to the COVID-19 pandemic accelerated trends such as digitalization, remote work, and e-commerce, leading to lasting changes in business practices and consumer behaviours. Companies reevaluated their supply chain strategies, invested in technology infrastructure, and adapted to new regulatory requirements to enhance resilience and agility in a post-pandemic world.

Social impacts

The social aspects associated with disease outbreaks look at societal norms, perceptions, and well-being. There are many different ways of categorising these impacts. In this section, we will consider examples of cultural, community, psychological, and demographic impacts.

1. Cultural impacts:

The stigma and discrimination faced by individuals affected by HIV/AIDS have led to profound cultural shifts in communities worldwide.¹⁰ Fear of contagion, misinformation, and misconceptions surrounding the disease have fuelled discrimination, ostracism, and human rights violations against affected individuals and communities.

2. Community impacts:

The COVID-19 pandemic strained social support systems and community networks, exacerbating feelings of isolation, loneliness, and vulnerability among vulnerable populations such as the elderly, low-income families, and marginalised communities. Restrictions on social gatherings, closures of community centres, and disruptions in religious and cultural events further challenged social cohesion and resilience.

3. Psychological impacts:

The psychological toll of the Spanish Flu pandemic in 1918-1919 left lasting scars on survivors and communities worldwide.¹¹ The sudden loss of loved ones, fear of contagion, and uncertainty about the future contributed to widespread anxiety, depression, and post-traumatic stress disorder (PTSD) among affected individuals, leading to long-term psychological and emotional distress.

4. Demographic impacts:

The impact of the HIV/AIDS pandemic on population demographics in Sub-Saharan Africa has been profound, with millions of deaths and millions more living with the disease. The loss of productive members of society has led to changes in migration patterns, family structures, and population growth rates, affecting social and economic development in the region.

What do we know about the socioeconomic impacts of the parainfluenza virus?

Unlike other major disease outbreaks, the socio-economic impacts of the parainfluenza virus outbreaks are not documented in the current pool of research. There may be different reasons for this. The first reason is that HPIV is usually associated with infants, children, and immunocompromised groups. Given the commonly affected demographic, it’s unlikely there will be significant socioeconomic impacts on a population, let alone on a global level.

However, on an individual level, acquiring this viral infection could lead to increased hospitalisations/ medical consultations, which adds a financial burden to affected individuals. It could also affect someone’s life significantly if they frequently take time off school or work, due to illness. 

Another reason for the lack of reports regarding the socioeconomic impacts of the HPIV outbreak is the nature of the disease itself. The parainfluenza virus is extremely common.¹² Chances are, people have acquired this infection several times throughout their lives. But as it is usually mild and can overlap with the ‘common cold’ or an influenza infection (the flu), an exact diagnosis of HPIV infection is often not made.

There are several studies exploring the socioeconomic impacts of the influenza virus. As mentioned earlier, this is separate from HPIV, but given the similarity in disease nature and progression, it can be helpful in highlighting some of these impacts.

A study by Esposito et al. states that Influenza outbreaks can result in a significant rise in school and parental (work) absences.¹³ It can also exacerbate secondary illnesses amongst other family members. In current times, unwell individuals may be mistaken for being COVID-19 positive. This can still incite fear of contagion in others, causing increased social aversion.

Summary

In this article, we explored the multifaceted impacts of disease outbreaks on society and the economy, categorising these effects into distinct economic and social dimensions. Drawing on previous examples of disease outbreaks, we highlighted some of the consequences of outbreaks on industries, communities, and individuals. By understanding and addressing these challenges, we can strive to build more resilient and equitable societies in the face of future outbreaks.