Delta and the risk of reopening schools in September

School is said to reopen by Sept 1, and the basis could be the expected higher vaccinated population by then. However, Emir Research suggested in earlier releases that the very minimum indicator to reopen schools should be when all adults have been vaccinated, which has been targeted by October.

Even so, it must be noted that this suggestion was based on the previous assumption that younger age groups are less likely to exhibit severe symptoms, and that the fully vaccinated are most of the time protected.

However, new variants such as Delta and recent breakthrough cases may prove that this is not the case, and we could be putting children (and the adults they are exposed to) at great risk through the premature reopening of schools.

There has yet to be sufficient empirical evidence to conclude that variant Delta is causing more severe symptoms in children, but recent anecdotal evidence from the US is concerning.

The American Academy of Paediatrics reported a spike in cases among children from July 29 to Aug 5 whereby from the 623,590 Covid-19 cases reported, 15.0% (93,824 cases) were represented by children.

There is no genomic data in said report but the gradual increase of cases since the beginning of July which was then followed by a significant surge coincides well with the period where variant Delta gradually, then significantly, displaced Alpha as the dominant variant in North America, according to data by the Centers for Disease Control and Prevention (CDC).

The state of Florida reportedly observed a similar situation where infection cases nearly doubled in mid-July. Reportedly, associate professor of epidemiology at University of South Florida College of Public Health, Dr Jason Salemi, pointed to an 87% increase in cases for children aged 12 and below and an 84% increase for those aged between 12 and 19.

It was also widely reported in various US news sites that Ochsner Hospital for Children in New Orleans has been experiencing an increase in Covid cases among children below 18 years of age, whereby since early July, the positivity rate for this age group staggeringly increased six-fold, from 4% to 24%.

In addition to increasing cases, there appears to be growing reports of children hospitalisations.

It has been reported that the Children’s Hospital New Orleans experienced 20 severe Covid-19 cases among children within two weeks from the end of July until early August, when it had no such cases in prior weeks. Ochsner hospitals reportedly experienced a similar phenomenon within the same period.

The period of the sudden surge in cases and hospitalisations could be pointing to variant Delta (or other variants) as the culprit.

We mentioned previously regarding studies referenced by the CDC indicating variant Delta to be clearly more infectious and likely to cause more severe disease than Alpha when comparing vaccinated versus unvaccinated groups.

Therefore, it is reasonable to question if these recent reports are an early observation of Delta’s more severe effect on children under 18.

Making up nearly 30% of Malaysia’s population, under-18s are the biggest unprotected group. Sooner or later, they will have to be protected from the virus – either through vaccination or through natural immunity. Either way, it is too soon to gamble their fate.

According to November 2020 data by the Department of Statistics Malaysia, the Klang Valley holds the biggest share of children under 18 years at 24.4%. The two states of Sabah and Johor had the lowest percentage of fully vaccinated population as of Aug 11 at 13.2% and 16.8% each, yet hold the second and third highest national share of under-18 population at 12.4% and 11.6% each.

Consultant paediatrician Dr Amar-Singh HSS had projected the situation in the five states of Sabah, Kedah, Perak, Johor and Penang to get worse with the combination of rapid Delta spread, low vaccination rate (all below 25%) and weak healthcare infrastructure. Together, these states hold 42.4% of Malaysia’s under-18 population.

In other words, the states with the highest Delta spread risk are also the states with a large percentage of children under 18. This is a formula for disaster.

Due to highly infectious variants evading immunity, causing breakthrough infections in fully-vaxxed individuals and insufficient mucosal immunity that challenges the traditional notion of herd immunity, even the fully vaccinated adult population targeted by October may not suffice to protect both children and adults – what more by early September?

The question now is risk of vaccine side effects versus the risk of infection and severity of symptoms from new variants of SARS-CoV-2. Understandably, many parents are not willing to take the chance through natural immunity given the potential risks.

Some parents may want their children to be vaccinated first, while those concerned about both virus infection as well as vaccine side effects may opt to keep children physically out of school until more information and safer solutions are available.

The US Food and Drug Administration (FDA) has authorised the emergency use of the Pfizer-BioNTech Covid-19 vaccine for individuals 12 years of age and older under emergency use authorisation (EUA), and Malaysia’s authorities have given the green light to vaccinate 12- to 17-year-olds with underlying medical conditions, followed with 12- to 17- year-olds with no medical issues.

This appears similar to decisions made by the UK government to vaccinate higher-risk 12- to 17-year-olds, and the recent opening to vaccinate 16- to 17-year-olds.

However, we don’t know the effectiveness of these vaccines against new variants and the vaccination of all adults and adolescents will take some time. Even then, there is still a significant population of those under 12 years of age.

While waiting for safe and effective vaccines and other interventions for all ages, we should study global data thoroughly, focus on increasing the share of vaccinated population and address potential issues of immunological uncertainties.

Local news indicates large hesitancy among parents about sending their children to school when case numbers are still high. Furthermore, the year-end school holidays will start in November. Why take a big risk in September and October? Therefore, the soonest time to reopen schools could be early next year.

In the meantime, we refer back to “education emergency response” as one of the strategic thrusts outlined in “Exit strategy building blocks for Malaysia” dated June 17.

Long Covid and multi-system inflammatory syndrome

Even if it was found that youngsters are less likely to experience severe symptoms from Delta infections or other variants, cases of infections are likely to increase when schools reopen, and those infected may still suffer from debilitating effects of long Covid, and a potentially serious and deadly health complication known as multi-system inflammatory syndrome in children (MIS-C).

According to the CDC, MIS-C is a “condition where different body parts can become inflamed, including the heart, lungs, kidneys, brain, skin, eyes, or gastrointestinal organs” and that “many children with MIS-C had the virus that causes Covid-19”.

Though it has been reported that a UK study showed very small incidence of long Covid among children, the study has several weaknesses such as contrasting findings to the UK government’s report on long-term symptoms experienced by children post-Covid-19 infection, data gathering period before the prevalence of Delta (Sept 1, 2020 until Jan 24, 2021) and findings that may have not considered MIS-C, as outlined by health and medical information portal Healthline.

Recent anecdotal reports by The New York Times published on Aug 8 point to the experience of many young people with persistent/prolonged physical, neurological, psychological symptoms post-Covid-19 infection.

A study of nearly two million insurance claims from Covid-19 patients by FAIR Health (a US organisation collecting and managing the databases of privately billed health insurance claims) found that intestinal issues and “adjustment disorders” were relatively more frequent for those under 18.

According to renowned medical and health organisation Johns Hopkins Medicine, an adjustment disorder is “an emotional or behavioural reaction to a stressful event or change in a person’s life”. Of most concern, the organisation stated that the excessive response to stressors “should significantly interfere with social, occupational or educational functioning”.

What’s at stake is our children’s life, health, and future functional capacity. Make no mistake about it.

Ameen Kamal is head of science & technology at independent think tank Emir Research.

The views expressed in this article are those of the author(s) and do not necessarily reflect the position of MalaysiaNow.